JP6070108B2 - Steel sheet pile rotating jig and steel sheet pile rotating method - Google Patents

Description

  The present invention relates to a steel sheet pile rotating jig for rotating a steel sheet pile and a method of rotating the steel sheet pile.

  When manufacturing a long steel sheet pile, the length of the steel sheet pile as a product is lengthened by welding the end surfaces of a plurality of steel sheet piles. Conventionally, when welding steel sheet piles, not only downward welding, which has excellent welding quality and efficiency, but also lateral welding has to be performed. In this horizontal welding, the skill level of the operator tends to affect the quality of welding, and the frequency of occurrence of welding defects tends to increase.

  Moreover, when welding the end surfaces of steel sheet piles, it is necessary to weld the back surface after welding the front surface of the steel sheet pile. In order to weld the back surface, the steel sheet pile must be reversed using a crane or the like after the front surface is welded, and the reversing operation takes a considerable amount of time, resulting in a decrease in throughput. Since such a reversing operation is performed not only in the welding process of the steel sheet pile but also in the inspection process, the throughput is further reduced.

  As an apparatus for solving the above-mentioned problems, for example, there is a steel sheet pile reversing apparatus described in Patent Document 1. This steel sheet pile reversing device reverses the steel sheet pile while transferring it, and it is not necessary to use a crane or the like when reversing the steel sheet pile.

Japanese Utility Model Publication No. 60-24401

  However, in the steel sheet pile reversing device described in Patent Document 1, the steel sheet pile cannot be fixed in the middle of reversing the steel sheet pile. For this reason, although the reversing operation | work of the steel sheet pile by a crane etc. can be abbreviate | omitted, a horizontal welding must still be performed and there exists a possibility that a welding defect may generate | occur | produce in a steel sheet pile.

  In order to solve the above-described problems, an object of the present invention is to provide a steel sheet pile rotating jig and a steel sheet pile rotating method capable of always performing downward welding when welding steel sheet piles.

In order to solve the above-described problems, according to the present invention, a steel sheet pile rotating jig for rotating a steel sheet pile, comprising a tubular fixture for fixing the steel sheet pile, the steel sheet pile inside the fixture. The position restriction mechanism is opposed to the flat plate-like first height restriction jig for restricting the position of the steel sheet pile in the height direction, and the first height restriction jig. A flat plate-like second height regulating jig, a first width regulating jig which is disposed on the outer side in the width direction of the steel sheet pile and is fixed to the first height regulating jig, and steel A second width restricting jig disposed on the inner side in the width direction of the sheet pile and fixed to the second height restricting jig, and the first height restricting jig and the second height restricting jig. Each of the jigs is provided so as to be movable in the height direction of the steel sheet pile, and the first height regulating jig and the second height regulating jig include A slot hole extending in the width direction of the steel sheet pile is formed, and the first width restricting jig moves along the slot hole of the first height restricting jig so as to contact the steel sheet pile. The steel sheet pile rotation is characterized in that the second width restricting jig contacts the steel sheet pile by moving along the slot hole of the second height restricting jig. A jig is provided.

  In addition, the fixing tool includes a semicircular tubular first fixing tool and a semicircular tubular second fixing tool, and fixes the first fixing tool and the second fixing tool. A detachable fixing means may be provided, and the first fixing tool and the second fixing tool may be fixed by the fixing means such that end faces in the circumferential direction overlap each other.

Moreover, in order to solve the said subject, according to this invention, it is the rotation method of the steel sheet pile which rotates a steel sheet pile , Comprising: When fixing a steel sheet pile inside a cylindrical fixture, it is flat 1st. Of the steel sheet pile by moving in a height direction the height regulating jig of the plate and the flat plate-like second height regulating jig provided to face the first height regulating jig. The position in the height direction is regulated, and the first width regulating jig arranged on the outer side in the width direction of the steel sheet pile is moved along the slot hole formed in the first height regulating jig to make the steel. While making it contact | abut to a sheet pile, the 2nd width control jig arrange | positioned inside the width direction of a steel sheet pile is moved along the slot hole formed in the said 2nd height control jig, and it is made into a steel sheet pile. be to contact, to regulate the widthwise position of the sheet piles, that is rotated by the rotation means the fixture steel sheet pile is fixed Rotation method of steel sheet pile according to symptoms is also provided.

  Further, the fixture is composed of a semicircular tubular first fixture and a semicircular tubular second fixture, and a steel sheet pile is disposed inside the first fixture, and then the first The first fixing tool and the second fixing tool may be fixed by a detachable fixing means so that end faces in the circumferential direction of one fixing tool and the second fixing tool overlap each other. .

  According to the present invention, since the steel sheet piles fixed to the jig can be freely rotated, it is possible to always perform downward welding when welding the steel sheet piles. Thereby, the occurrence frequency of the welding defect of the steel sheet pile as a product can be suppressed.

It is a figure which shows the welding line of the steel sheet pile which concerns on embodiment of this invention. It is a side view of FIG. It is AA sectional drawing in FIG. It is a figure which shows operation | movement of the 1st height control jig | tool and 2nd height control jig | tool which concern on embodiment of this invention. It is a figure which shows operation | movement of the 1st width control jig | tool and 2nd width control jig which concern on embodiment of this invention. It is a figure which shows the fixing method of the 1st fixing tool and 2nd fixing tool which concern on embodiment of this invention. It is a figure which shows rotation operation | movement of the fixing tool which concerns on embodiment of this invention. It is a figure showing the shape of the 1st width regulation jig concerning the modification of the present invention, and the 2nd width regulation jig.

  Hereinafter, an embodiment of the present invention will be described based on a steel sheet pile rotating jig 1. In the present specification and drawings, elements having substantially the same functional configuration are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIGS. 1 and 2, the steel sheet pile rotating jig 1 includes a fixture 3 for fixing the steel sheet pile 2. Moreover, in this Embodiment, the turning roll 4 which is an example of the rotation means to rotate the fixing tool 3 is provided under the fixing tool 3, and the turning roll 4 can move to the length direction L of the steel sheet pile 2. It is provided on the base of the trolley 5.

  The fixture 3 includes a semicircular tubular first fixture 3a and a semicircular tubular second fixture 3b. An end surface portion of the first fixing tool 3a in the circumferential direction θ is provided with a fixing tool protrusion 6a that protrudes along the length direction L. Similarly, the second fixture 3b is also provided with a fixture projection 6b. These fixture protrusions 6a and 6b are provided with holes 7a and 7b into which bolts can be inserted, and the holes 7a are internally threaded. The first fixture 3a and the second fixture 3b are fixed so that the end faces in the circumferential direction θ overlap each other by fastening the fixture projections 6a and 6b with the fixture bolt 8. ing. In addition, the 1st fixing tool 3a and the 2nd fixing tool 3b should just be fixed so that it can rotate with the turning roll 4 mentioned later, The end surface in circumferential direction (theta) of the fixed 1st fixing tool 3a and There may be a gap between the second fixture 3b and the end face in the circumferential direction θ.

  In addition, the fixture 3 has a rectangular plate-like first height regulating jig 9a on which the steel sheet pile 2 is placed, and a square plate-like second parallel to the first height regulating jig 9a. A height regulating jig 9b is provided so as to face. As shown in FIGS. 1 and 3, the first height regulating jig 9 a is provided so as to pass through the inside of the circular fixture 3 along the length direction L, and the first height regulating jig 9 a. Both ends of the tool 9a protrude from the fixing tool 3 in plan view. A slot hole 11 is formed in the protruding height regulating jig protruding portion 10 so as to extend in the width direction W of the steel sheet pile 2.

  As shown in FIGS. 2 and 3, a plurality of hydraulic cylinders 12 provided on the inner surface of the fixture 3 are attached to the bottom surface of the first height regulating jig 9 a. Four hydraulic cylinders 12 are provided in the first height regulating jig 9a, and can extend and contract in a direction perpendicular to the bottom surface of the first height regulating jig 9a. As shown in FIG. 4, the first height regulating jig 9 a can be moved along the height direction H by extending and contracting these hydraulic cylinders 12. In FIG. 4, the steel sheet pile 2 is not shown. Moreover, the height direction H is a direction perpendicular | vertical to the width direction W of the steel sheet pile 2 in side view (FIG. 2).

  As shown in FIGS. 1 and 3, a prismatic first width regulating jig 13a having an isosceles trapezoidal surface is provided on the first height regulating jig 9a. Is provided so as to pass through along the length direction L. Both ends of the first width regulating jig 13a project from the fixture 3 in plan view, but do not project from the height regulating jig projecting portion 10. Two first width regulating jigs 13 a are arranged outside the steel sheet pile 2 in the width direction W. A hole 15 into which a jig bolt 14 can be inserted is provided on the top surface of the first width regulating jig 13a, and the hole 15 penetrates to the bottom of the first width regulating jig 13a. .

  The diameter of the jig bolt 14 inserted into the first width regulating jig 13a is smaller than the short axis length of the slot hole 11 provided on the first height regulating jig 9a. The length of the jig bolt 14 is such that when the jig bolt 14 is inserted into the hole 15 of the first width regulating jig 13a, the tip of the jig bolt 14 has the first height regulation. It is long enough to protrude downward with respect to the bottom surface of the jig 9a. The first width restricting jig 13 a is fixed by tightening a jig bolt 14 protruding from the bottom surface of the first height restricting jig 9 a with a jig nut 16. Since the position where the first width restricting jig 13a is fixed can be freely changed along the slot hole 11, the first width restricting jig 13a is arranged in the width direction of the steel sheet pile 2 as shown in FIG. Can move along. In addition, in FIG. 5, the steel sheet pile 2 is not illustrated.

  In the present embodiment, the second height regulating jig 9b and the second width regulating jig 13b are configured in the same manner as the first height regulating jig 9a and the first width regulating jig 13a. Therefore, the description is omitted. However, unlike the first width regulating jig 13a, two second width regulating jigs 13b are arranged inside the steel sheet pile 2 in the width direction W.

  As shown in FIGS. 1 and 2, two turning rolls 4 for rotating the fixture 3 are provided below the fixture 3. The turning rolls 4 are arranged at intervals so that the tubular fixture 3 can be efficiently rotated and the fixture 3 does not fall over the turning roll 4. Further, the turning roll 4 is provided on a cart 5, and the cart 5 can move in the length direction L of the steel sheet pile 2. In addition, two stoppers 17 are provided on the carriage 5 so as to grip the vicinity of the lowermost portion of the fixture 3. This prevents the fixture 3 from falling off the carriage 5 while the carriage 5 is moving. The turning roll 4 is driven by a driving device (not shown).

  A method of rotating the steel sheet pile 2 using the steel sheet pile rotating jig 1 configured as described above will be described based on the welding method of the steel sheet pile 2.

  First, as shown to Fig.6 (a), the semi-circular tubular 1st fixing tool 3a is mounted on the turning roll 4 provided in the trolley | bogie 5. As shown in FIG. Thereafter, as shown in FIG. 6B, the steel sheet pile 2 to be welded is placed on the first height regulating jig 9a using a crane or the like. And the 2nd fixing tool 3b is moved above the 1st fixing tool 3a with a crane etc., and as shown in FIG.6 (c), end surface in circumferential direction (theta) mutually overlaps, and the 1st is carried out. Placed on the fixture 3a. Thereafter, the fixture protrusions 6 a and 6 b provided on the fixtures 3 a and 3 b are fastened and fixed by the fixture bolts 8.

  The position in the width direction W of the first width regulating jig 13a is adjusted according to the size of the steel sheet pile 2 before placing the steel sheet pile 2 on the first height regulating jig 9a. . In that case, it adjusts so that the position of the width direction W of the steel sheet pile 2 can be controlled in the outer side of the steel sheet pile 2. Similarly, the second width regulating jig 13b is also adjusted so that the position of the steel sheet pile 2 in the width direction W can be regulated inside the steel sheet pile 2.

  And each height control jig 9a, 9b is made to the height of the steel sheet pile 2 by expanding-contracting the hydraulic cylinder 12 attached to the 1st height control jig 9a and the 2nd height control jig 9b. Move in direction H. The steel sheet pile 2 is fixed so as to be sandwiched between the height restriction jigs 9a and 9b by moving the height restriction jigs 9a and 9b until they abut against the steel sheet pile 2. Thereby, the position of the height direction H of the steel sheet pile 2 is regulated. Then, the position in the width direction W of the 1st width control jig | tool 13a and the 2nd width control jig | tool 13b is finely adjusted as needed, and is made to contact with the steel sheet pile 2. Thereby, the position of the width direction W of the steel sheet pile 2 is regulated.

  In this way, the steel sheet pile 2 is fixed to the fixture 3. As shown in FIG. 1, the steel sheet pile rotating jig 1 is provided for each steel sheet pile to be welded, and each steel sheet pile rotating jig 1 in which the steel sheet pile 2 is fixed to the fixture 3 is, together with the turning roll 4, They move by the carriage 5 and approach each other. And the end surfaces in the length direction L of each steel sheet pile 2 are made to contact, and welding is performed in the welding part WP.

  At this time, since each steel sheet pile 2 is fixed as shown in FIG. 6A, the front side bottom surface portion P1 of each steel sheet pile 2 can be welded downward. And after completion of welding of the front side bottom face part P1 of each steel sheet pile 2, as shown in FIG.6 (b), the turning roll 4 is rotated so that the front side part P2 of each steel sheet pile 2 may become horizontal, and a fixture 3 is rotated. Thereby, the front side surface part P2 of each steel sheet pile 2 can be welded downward. Then, as shown in FIG.6 (c), the turning roll 4 is further rotated so that the back side bottom face part P3 of each steel sheet pile 2 may become horizontal, and the fixing tool 3 is rotated. Thereby, the back side bottom face part P3 of each steel sheet pile 2 can also be welded downward. By repeating such a rotating operation, the other surfaces of the steel sheet piles 2 can always be welded downward.

  As mentioned above, according to this invention, a fixing tool can be freely rotated in the state which fixed the steel sheet pile to the cylindrical fixing tool. Thereby, when welding the end surfaces of a steel sheet pile, an operator can always weld downward. As a result, the frequency of occurrence of welding defects in the steel sheet pile can be suppressed.

  Moreover, according to this invention, the reversing work of the steel sheet pile using the crane etc. which was performed conventionally can be omitted. Thereby, the inversion time in a welding process or an inspection process can be omitted, and the throughput can be greatly improved.

  In addition, the fixture according to the present invention includes a semicircular tubular first fixture and a semicircular tubular second fixture. For this reason, after mounting a steel sheet pile on a 1st fixing tool, a 1st fixing tool and a 2nd fixing tool can be fixed so that a 2nd fixing tool may be covered. Thereby, fixation and removal of a steel sheet pile can be performed easily.

  Moreover, the 1st height control jig and 2nd height control jig which concern on this invention can each move independently in the height direction H of a steel sheet pile. For this reason, various steel sheet piles with different heights can be fixed to the fixture.

  The first width regulating jig according to the present invention is provided outside the steel sheet pile in the width direction W, and the second width regulating jig is provided inside the steel sheet pile in the width direction W. Thereby, even if it rotates a fixing tool, the position control of the width direction W of a steel sheet pile can be performed reliably. In addition, while the steel sheet pile is fixed to the fixture, the steel sheet pile can be prevented from being deformed due to welding distortion, so that high quality welding can be performed. In addition, the first width regulating jig and the second width regulating jig can be moved independently in the width direction W of the steel sheet pile. For this reason, various steel sheet piles with different widths can be fixed to the fixture.

  As mentioned above, although preferred embodiment of this invention was described, this invention is not limited to this example. It is obvious for those skilled in the art that various changes or modifications can be conceived within the scope of the technical idea described in the claims. It is understood that it belongs to.

  For example, in the embodiment of the present invention, the fixture is composed of the first fixture and the second fixture, but the fixture is composed of the first fixture and the second fixture. Instead, it may be a single circular tubular fixture. In this case, in order to place the steel sheet pile on the first height regulation jig, the steel sheet pile suspended by a crane or the like is moved along the length direction L so as to be inserted into the fixture. Just place it. Since the subsequent steel sheet pile position regulating method and rotation method are the same as those described in the embodiment, even when a single circular tubular fixture is used, the steel sheet piles can always be welded downward. .

  Further, in the embodiment of the present invention, the first fixing tool and the second fixing tool are fixed by the fixing bolts, but the fixing means is not limited to this, and the removable fixing is possible. Any means may be used. That is, it is within the technical scope of the present invention that the outer shape of the fixture becomes a tubular shape by fixing the first fixture and the second fixture together.

  In the embodiment of the present invention, the first height regulating jig and the second height regulating jig are rectangular flat plates. However, the present invention is not limited to this. Further, although the hydraulic cylinder is used as the lifting mechanism related to the height adjustment of the first height regulating jig and the second height regulating jig, other lifting mechanisms may be adopted.

  In the embodiment of the present invention, the first width regulating jig and the second width regulating jig are fixed by the jig bolt and the jig nut, but other fixing means are adopted. May be. Moreover, you may use an actuator etc. for the movement to the width direction of each width control jig | tool. In the embodiment of the present invention, the shape of each width regulating jig is a prismatic shape having an isosceles trapezoidal surface. However, as shown in FIG. 8, R is provided on the side surface of each width regulating jig 9a, 9b. It may be a shape that is attached. According to this, even if it is a case where the steel sheet pile 2 from which the angle which the bottom face and side surface of the steel sheet pile 2 form differs, by moving each width control jig | tool 9a, 9b to the width direction, The position in the width direction can be easily regulated.

  As described above, the shape, fixing means, movable mechanism, etc. of each height regulating jig and each width regulating jig are appropriately changed, and each height regulating jig can be moved in the height direction. And what has the structure which each width control jig | tool can move to the width direction belongs to the technical scope of this invention.

  Moreover, in the embodiment of the present invention, one steel sheet pile rotating jig is used for each steel sheet pile to be welded, but depending on the length of the steel sheet pile, a plurality of steel sheet pile rotations are performed for each steel sheet pile. A jig may be used. In the embodiment of the present invention, the turning roll is driven by a driving device or the like. However, when a plurality of steel sheet pile rotating jigs are provided, at least one turning roll is driven to perform another turning. The roll may be driven. The turning roll is an example of a rotating means for rotating the fixture, and is not limited to this.

  The present invention can be applied to a steel sheet pile rotating jig for rotating a steel sheet pile and a steel sheet pile rotating method.

DESCRIPTION OF SYMBOLS 1 Steel sheet pile rotation jig 2 Steel sheet pile 3 Fixing tool 3a 1st fixing tool 3b 2nd fixing tool 4 Turning roll 5 Carriage 6a Fixing tool protrusion part 6b Fixing tool protrusion part 7a Hole part 7b Hole part 8 Fixing tool bolt 9a First height regulating jig 9b Second height regulating jig 10 Height regulating jig protrusion 11 Slot hole 12 Hydraulic cylinder 13a First width regulating jig 13b Second width regulating jig 14 Tool bolt 15 Hole 16 Jig nut 17 Stopper WP Welded part P1 Front side bottom part P2 Front side side part P3 Back side bottom part

Claims (4)

A steel sheet pile rotating jig for rotating a steel sheet pile,
It has a tubular fixture that fixes the steel sheet pile,
A steel sheet pile position regulation mechanism is provided inside the fixture ,
The position regulating mechanism is
A flat plate-shaped first height regulating jig for regulating the position of the steel sheet pile in the height direction;
A flat plate-like second height regulating jig provided opposite to the first height regulating jig;
A first width regulating jig disposed on the outer side in the width direction of the steel sheet pile and fixed to the first height regulating jig;
A second width regulating jig disposed on the inner side in the width direction of the steel sheet pile and fixed to the second height regulating jig,
The first height regulating jig and the second height regulating jig are provided so as to be movable in the height direction of the steel sheet pile,
Slot holes extending in the width direction of the steel sheet piles are formed in the first height regulating jig and the second height regulating jig,
The first width restricting jig moves along the slot hole of the first height restricting jig so as to come into contact with the steel sheet pile, and the second width restricting jig is connected to the second height restricting jig. A steel sheet pile rotating jig, wherein the steel sheet pile rotation jig is configured to abut against the steel sheet pile by moving along the slot hole of the height regulating jig . The fixture is composed of a semicircular tubular first fixture and a semicircular tubular second fixture,
Detachable fixing means for fixing the first fixing tool and the second fixing tool;
2. The steel sheet pile rotating jig according to claim 1, wherein the first fixing tool and the second fixing tool are fixed by the fixing means such that end surfaces in a circumferential direction overlap each other. A steel sheet pile rotating method for rotating a steel sheet pile,
When fixing the steel sheet pile inside the circular fixture ,
Moving the flat plate-like first height regulating jig and the flat plate-like second height regulating jig provided to face the first height regulating jig in the height direction And regulate the position of the steel sheet pile in the height direction,
The first width restricting jig disposed on the outer side in the width direction of the steel sheet pile is moved along the slot hole formed in the first height restricting jig so as to contact the steel sheet pile, and the steel sheet pile By moving the second width regulating jig arranged on the inner side in the width direction along the slot hole formed in the second height regulating jig and bringing it into contact with the steel sheet pile, Regulate the position in the width direction,
A method for rotating a steel sheet pile, wherein the fixing tool to which the steel sheet pile is fixed is rotated by a rotating means. The fixture comprises a semicircular tubular first fixture and a semicircular tubular second fixture;
A steel sheet pile is arranged inside the first fixing tool, and then the end faces in the circumferential direction of the first fixing tool and the second fixing tool are overlapped with each other by a detachable fixing means. The method of rotating a steel sheet pile according to claim 3 , wherein the first fixing tool and the second fixing tool are fixed.

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