JP5127424B2 - Positioner face plate and core connection jig - Google Patents

Description

  The present invention is for fixing a core of a steel frame comprising a diaphragm and a structural member such as a square steel pipe, a round steel pipe, an H-shaped steel, or an SRC member assembled in a cross column structure, to a positioner. The present invention relates to a positioner face plate and a core connecting jig for connecting a plurality of cores.

  In column pillars, pipe pillars, and SRC pillars used as building steel frames, members called cores are produced in the production process. The types of cores include columns, pipes, SRCs, etc., and the columns shown in FIG. 9 (a) are obtained by joining the diaphragms 2 to both end faces of the square steel pipe 1 by welding, as shown in FIG. 9 (b). The pipe is obtained by joining diaphragms 4 to both end faces of a circular steel pipe by welding. The SRC shown in FIG. 9C is obtained by joining diaphragms to both end faces of a combination of H-shaped steels in a cross section or joining diaphragms to both end faces of H-shaped steels by welding.

The column pillar shown in FIG. 8 (a) is arranged between the square steel pipes 8 with the joints in which the beam flanges 6 and webs 7 whose cross sections are H-shaped on the side surfaces of the square steel pipes 1 of the columns are joined to the cores by welding. A plurality of square steel pipes 8 are joined. Further, the pipe column shown in FIG. 8B has a joint formed by welding a beam flange 6 and a web 7 having a H-shaped cross section to the peripheral surface of the circular steel pipe 3 between the circular steel pipes 9. A plurality of circular steel pipes 9 are joined. Similarly, in the SRC column shown in FIG. 8C, a joint formed by welding a beam flange 6 and a web 7 having a cross section of an H shape to a structural member assembled in a cross shape is arranged between the structural members. Are joined together.

  Conventionally, these cores are installed on the positioner after the structural members are temporarily attached, and the four corners of the diaphragm are restrained by clamps on the faceplate of the positioner (Patent Document 1). FIGS. 10A and 10B are longitudinal sectional views schematically showing a state in which this column is fixed to the face plate 10 of the positioner, taking a column (square steel pipe) as an example. The face plate 10 is arranged with its rotation axis horizontal and the face vertical, and the column is fixed to the face plate 10 by clamping the corner of the diaphragm 2 with a clamp 11 with its central axis horizontal. ing. At this time, the column diaphragm 2 is fixed to the face plate 10 at a predetermined distance from the restraining surface of the face plate 10. As shown in FIG. 10 (b), when the diaphragm 2 and the end surface of the rectangular steel pipe 1 are circumferentially welded in the circumferential direction of the steel pipe 1 (welded portion 12), the diaphragm 2 is caused by this welding heat. This is because the diaphragm 2 can be freely deformed by providing the predetermined interval in order to be deformed, thereby preventing the clamp 11 from being damaged by thermal stress. That is, in the prior art, an excessive stress applied to the clamp 11 due to the deformation of the diaphragm 2 due to welding heat is avoided by providing a predetermined interval between the diaphragm 2 and the face plate 10.

  Patent Document 2 discloses a core connection welding system in which a plurality of cores are connected by a core connection jig and the plurality of cores are continuously welded. Also in the case of this core connecting jig, a predetermined interval is provided between adjacent diaphragms when connecting, enabling deformation of the diaphragm by welding heat and preventing damage to the core connecting jig. Yes.

Japanese Patent Publication No. 5-75520 Japanese Patent Publication No. 5-75519

  However, in the prior art, when the core diaphragm is clamped to the faceplate of the positioner and the core is fixed to the positioner, a predetermined interval is provided between the core diaphragm and the faceplate of the positioner. Even if damage to the clamp 11 due to heat can be prevented, there is a problem that the column is biased (moved) in the longitudinal direction due to the deformation of the diaphragm. The same applies to the case where the cores are restrained and fixed by the core connecting jig.

  Normally, the four corners of the core diaphragm are fixed by a clamp member, but when the diaphragm is welded, there is a problem that the diaphragm is thermally deformed so that it falls to the side where the welding is performed with the four corners as fulcrums, This deformation deteriorates the assembling accuracy in the process of manufacturing the joint to be performed after core welding. Therefore, when the deformation is large, the deformation is corrected after welding, or previously deformed in the reverse direction before core welding. Measures such as adding a pre-process are taken, or measures are taken to increase the material cost, such as allowing deformation by increasing the plate thickness of the diaphragm.

  Furthermore, when one or more cores connected to one another are mounted on a positioner and a multiple joint simultaneous welding method in which a plurality of welding locations are simultaneously welded by a plurality of arc welding apparatuses is applied, welding occurs. Longitudinal deviation (movement) due to the deformation of the diaphragm expands several times as much as the number of welds. The deviation of the welding line that occurs when welding only one location is allowed by correction by the arc sensor and touch sensing, but if the deviation of the welding line that occurs when welding other locations is added, the deviation amount However, the correction by the arc sensor and touch sensing cannot tolerate the deviation, cannot perform normal welding, and cannot apply the multi-joint simultaneous welding method that enables high-efficiency production.

  The present invention has been made in view of such problems, and assumes a deformation amount due to welding before correction work after welding or before welding, and after the welding, it is previously deformed in the reverse direction so as to return to the normal position. To provide a positioner face plate and a core connecting jig capable of avoiding or reducing work, or avoiding an increase in material cost due to thickening of a diaphragm, and improving productivity by realizing simultaneous welding of a plurality of joints. Objective.

The positioner faceplate according to the present invention has a core composed of a structural member such as a square steel pipe, a round steel pipe, an H-shaped steel, or an SRC member assembled into a cross pillar structure, and a rectangular diaphragm to which the structural member is temporarily fixed. In the face plate for fixing to the positioner,
A rectangular support plate that rotates about a direction perpendicular to the surface as a rotation axis;
Four clamp members for fixing and supporting the core on the support plate in a horizontal state by clamping four corners of the diaphragm with a predetermined interval between the diaphragm and the support plate ;
And four blocks arranged between the diaphragm and the support plate in accordance with the position of the joint between the structural member and the diaphragm in the distance the same size of less than or size and,
Have
Each block is movable along four rails extending from the center of the four sides of the support plate toward the center of the support plate, and the block is fixed to the support plate at an arbitrary position on the rail. It is characterized by being.

  In the face plate of the positioner, it is preferable that three or more blocks are provided. Furthermore, it is preferable that the blocks are provided at four equal positions with the center of rotation of the support plate as the center. Furthermore, in the face plate of this positioner, the size of the block is preferably 0.5 to 1.0 mm smaller than a predetermined distance between the support plate and the diaphragm.

The jig for core connection according to the present invention includes a rectangular steel pipe, a circular steel pipe, an H-shaped steel, or a structural member such as an SRC member assembled in a cross column structure, and a rectangular diaphragm to which the structural member is temporarily fixed. In a core connecting jig for connecting a plurality of cores,
Four pairs for supporting the core in a horizontal state by clamping the four corners of adjacent diaphragms with support members interposed between the adjacent diaphragms at four corners with a predetermined interval therebetween . A clamping member of
Four blocks having a size equal to or smaller than the distance and arranged between the adjacent diaphragms according to the position of the joint between the structural member and the diaphragm;
A connecting bar that connects the support members disposed at the four corners of the diaphragm in a direction along the four sides of the diaphragm;
Have
Each of the blocks is supported with respect to the connection bar so that the position of the block can be adjusted in the direction perpendicular to the connection bar from the center of the connection bar .

  In the core connecting jig of the positioner, the size of the block is preferably 0.5 to 2.0 mm smaller than a predetermined interval between adjacent diaphragms.

  According to the present invention, a plurality of blocks are arranged between the position plate and the diaphragm of the core, or between the diaphragms when the core is connected, at a position farthest from the diaphragm fixing portion and at a position that suppresses contraction in the longitudinal direction of the workpiece. Therefore, it is possible to reduce the absolute amount of deformation by preventing the deformation of the diaphragm caused by the welding heat from becoming one direction with the corner as a fulcrum, and the weld line is shifted due to the deviation (movement) in the longitudinal direction of the core. By preventing this, simultaneous welding of a plurality of joints is possible, and productivity can be improved in any case.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the accompanying drawings. FIG. 1A is a schematic diagram showing an outline of the embodiment of the present invention, and FIG. 1B is a diagram showing an arrangement relationship between the diaphragm 2, the clamp member 22, and the block 23.

  In the present embodiment, the face plate 20 of the positioner rotates with a support plate 21 rotating about a direction perpendicular to the surface as a rotation axis, four clamp members 22 arranged on the core restraint surface of the support plate 21, The four blocks 23 are arranged on the core constraining surface of the support plate 21 so as to be interposed between the diaphragm 2 and the support plate 21. The core diaphragm 2 is clamped and restrained by a clamp member 22, whereby the core is fixed to the face plate 20. A block 23 is provided on the core restraint surface of the support plate 21 of the face plate 20, and the block 23 supports the positioner side surface of the diaphragm 2 so as not to move to the core restraint surface side. ing.

  FIG. 2 is a front view showing the face plate 20 of the positioner in the first embodiment of the present invention. The support plate 21 of the face plate 20 of the positioner has a substantially rectangular shape, and clamp members 22 are attached to the four corners of the support plate 21. The clamp member 22 can be fixed at an arbitrary position of the rail 24 extending toward the center of the support plate 21. Thus, the maximum diaphragm shown in the solid line is changed to a two-dot chain line. The four corners of the diaphragm can be clamped and fixed up to the minimum diaphragm shown in the figure.

  On the other hand, blocks 23 are attached to the central portions of the four sides of the support plate 21, respectively. Four rails 25 extend from the center of the four sides of the support plate 21 toward the center of the support plate 21, and the block 23 can move along the rails 25, and tighten the bolts 26. The block 23 can be fixed to the support plate 21 at that position. 3A is a plan view of the block 23, FIG. 3B is a front view, and FIG. 3C is a right side view. As shown in FIG. 3, the rail 25 is composed of two parallel rail members 25 a and 25 b that are spaced apart at an appropriate length, and a nut 27 is provided between the protruding portion of the rail members 25 a and 25 b and the support plate 21. The block 23 and the rail members 25a and 25b are sandwiched between the bolt 26 and the nut 27 by screwing the bolt 26 into the nut 27, and the block 23 can be fixed to the support plate 21. it can.

  In the faceplate 20 of the positioner configured as described above, the core diaphragm 2 to which the diaphragm 2 and the square steel pipe 1 are temporarily fixed is gripped by the clamp members 22 at the four corners to support the temporary core. Secure to the plate 21. The surface of the core diaphragm 2 on the support plate 21 side is supported by a block 23. Accordingly, as shown in FIG. 4, when the diaphragm 2 and the square steel pipe 1 are circumferentially welded at the outer peripheral portion of the contact portion (welded portion 12), the diaphragm 2 tends to be deformed as indicated by a two-dot chain line. This deformation is prevented by the block 23 that supports the back surface of the diaphragm 2. Therefore, when the diaphragm 2 is deformed, the square steel pipe 1 of the core and the diaphragm 2 on the opposite side are biased (moved) toward the support plate 21 as indicated by the arrows in the figure. As a result of the deformation of the diaphragm 2 being prevented, the deviation (movement) of the core is also prevented. However, since the four blocks 23 are merely arranged in a scattered manner on the surface of the diaphragm 2 on the support plate 21 side, the diaphragm 2 is slightly deformed at a portion other than the arrangement position of the blocks 23. However, by providing the block 23 at the center of the four sides of the edge of the diaphragm 2, deformation at the center of the four sides of the edge of the diaphragm 2 is avoided, and the clamp members 22 at the four corners of the diaphragm 2 are overloaded. Can be prevented from being applied and can be prevented from being damaged. In FIG. 4, reference numeral 41 denotes a gantry and reference numeral 42 denotes a rotation shaft.

  Therefore, the repair work due to the deformation of the diaphragm 2 is reduced, and the deviation of the weld line due to the deviation (movement) of the core is prevented.

  FIG. 5 is a front view showing a second embodiment of the present invention relating to a core connecting jig used when connecting cores, FIG. 6 is a perspective view thereof, and FIG. 7 is a cross-sectional view showing a block 33. It is. The core connecting jig 30 includes a pair of clamp members 32 disposed at each corner (four corners) of the rectangular diaphragm 2, a support member 36 sandwiched between each pair of clamp members 32, A connection bar 31 for connecting the support members 36 and a block 33 disposed in the vicinity of the center of each side of the diaphragm 2 are provided. About the diaphragm 2 which adjoins two cores, the support member 36 larger than this clamp member 32 is arrange | positioned between the pair of clamp members 32 each provided in each corner, In each corner, A support member 36 is interposed between the corner portions (triangular portions) of the two diaphragms 2, and a pair of clamp members is disposed with clamp members 32 disposed on both outer sides of the corner portions of the diaphragm 2. The clamp member 32 is fastened to the support member 36 by the bolt by inserting the hole provided in the hole 32 and screwing the bolt into the support member 36. Thus, at each corner of the diaphragm 2, the two clamp members 32 sandwich the corners of the two diaphragms 2 with the support member 36. In this way, adjacent cores are connected.

  The four support members 36 are connected to each other by a connecting bar 31. A support bar 35 having a rectangular cross section is disposed at the center of the connection bar 31, and a part of the support bar 35 is interposed between the diaphragms 2, and bolts are provided through holes provided in the connection bar 31. 34 is screwed into the internal thread of the support bar 35. When the bolt 34 is rotated clockwise, the support bar 35 has a rectangular cross section, and is sandwiched between the diaphragms 2 and does not rotate. Therefore, the bolt 34 is screwed into the support bar 35 and fixed to the support bar 35 and the connection bar 31. can do. On the other hand, a female screw is similarly formed in the core center side portion of the support bar 35. A screw rod 39 is screwed into this female screw, and a block 33 having a female screw formed in the center hole is screwed into the screw rod 39. It comes to fit. As shown in FIG. 7, the block 33 has a flat surface on the side of the diaphragm 2, and the space between the flat surfaces is equal to or slightly smaller than the space between the diaphragms 2. Therefore, the screw rod 39 is rotated. As a result, the block 33 does not rotate but moves along the screw rod 39. Thereby, the position of the block 33 can be adjusted.

  Even in the core connecting jig configured as described above, the corners of the diaphragm 2 are clamped by the two clamp members 32 via the support members 36 by tightening the bolts 37 at the respective corners. Thus, adjacent cores can be fixed. Then, the support bar 35 is fixed to the connection bar 31 by rotating the screw rod 39 to adjust the position of the block 33 and screwing the bolt 34.

  In this state, as shown in FIG. 7, the backing material 40 is disposed at the lower part of the groove, and the core that is temporarily attached by abutting the square steel pipe 1 with the groove formed at the tip of the end portion against the diaphragm 2, Circumferential welding is performed by arc welding. Due to this welding heat, the diaphragm 2 tends to be deformed in the direction in which the central portions thereof approach each other, but the deformation is prevented because the block 33 is interposed between the adjacent diaphragms 2. As a result, the repair work due to the deformation of the diaphragm 2 is reduced, and the deviation (movement) of the core in the longitudinal direction is prevented. As a result, the weld line is prevented from being displaced.

  In addition, in the said 1st Embodiment, although the clamp member 22 is provided in the 4 equal positions centering on the rotation center of the support plate 21, it is not restricted to such an arrangement | positioning, A workpiece is fixed. What is necessary is just to be arrange | positioned in the position which can. Further, in the first embodiment, the blocks 23 are provided at four equal positions with the rotation center of the support plate 21 as the center. However, the present invention is not limited to this, and for example, three or more blocks 23 may be provided. Good.

  In the case of the face plate of the first embodiment, the size of the block 23 is preferably 0.5 to 1.0 mm smaller than the predetermined distance between the support plate 21 and the diaphragm 2. Furthermore, in the case of the pair clamp plate of the second embodiment, the size of the block 33 is preferably 0.5 to 2.0 mm smaller than a predetermined interval between adjacent diaphragms. Note that the dimensional condition is set based on a range that can be corrected by an arc sensor or the like, and such a deviation amount from a predetermined interval can be absorbed by a function of a conventional arc sensor or the like. On the contrary, the burden on the clamp member is reduced by making a slight deformation margin.

  Next, an example for demonstrating the effect of the present invention will be described in comparison with a conventional example that is out of the scope of the present invention. FIG. 11 is a graph showing the amount of deformation of the side of the diaphragm when the column is circumferentially welded by a positioner using a conventional face plate as a distance from a fixed point that does not move by welding. One side length of the column cross section is 250 mm, the thickness of the column is 12 mm, and one side length of the diaphragm is 300 mm. FIG. 12 is a graph showing the same deformation amount when the column is circumferentially welded by the positioner using the face plate of the embodiment of the present invention. Further, the size of the column or the like is the same as in FIG. As is apparent from the comparison of these figures, the deformation amount of the column after welding is 1.18 mm on the average in the example of the present invention and 4.15 mm on the average in the conventional example. Therefore, in the case of the Example of this invention, it turns out that there is less deformation | transformation than before.

(A) is a side view of the positioner using the face plate which concerns on 1st Embodiment of this invention, (b) is a front view of a face plate. It is a detailed front view of a face plate. (A) is a plan view of the block 23, (b) is a front view, and (c) is a right side view. It is a front view which shows operation | movement of this embodiment. It is a detailed front view which shows the pair clamp board which concerns on 2nd Embodiment of this invention. It is a perspective view which shows the state which connected the core of this 2nd Embodiment. It is sectional drawing which similarly shows the block 33. FIG. (A), (b), (c) is a figure which shows the structure of a column pillar, a pipe pillar, and an SRC pillar, respectively. (A), (b), (c) is a figure which shows the structure of a column, a pipe, and SRC, respectively. (A), (b) is a figure which shows the thermal deformation of the conventional diaphragm. It is a graph which shows the grade of the conventional heat deformation. It is a graph which shows the grade of the thermal deformation of the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Square steel pipe 2 Diaphragm 3 Circular steel pipe 4 Diaphragm 6 Flange 7 Web 8 Square steel pipe 9 Circular steel pipe 10 Face plate 11 Clamp 12 Welded part 20 Face plate 21 Support plate 22 Clamp member 23 Block 24 Rail 25 Rail 25a Rail member 26 Bolt 27 Clamp plate 32 Clamp member 33 Block 34 Bolt 36 Support member 37 Bolt 39 Screw rod 40 Backing material 41 Mounting base 42 Rotating shaft

Claims (4)

Face plate for fixing to the positioner a core composed of a structural member such as a square steel pipe, a round steel pipe, an H-shaped steel, or an SRC member assembled into a cross column structure and a rectangular diaphragm to which the structural member is temporarily fixed. In
A rectangular support plate that rotates about a direction perpendicular to the surface as a rotation axis;
Four clamp members for fixing and supporting the core on the support plate in a horizontal state by clamping four corners of the diaphragm with a predetermined interval between the diaphragm and the support plate ;
And four blocks arranged between the diaphragm and the support plate in accordance with the position of the joint between the structural member and the diaphragm in the distance the same size of less than or size and,
Have
Each block is movable along four rails extending from the center of the four sides of the support plate toward the center of the support plate, and the block is fixed to the support plate at an arbitrary position on the rail. A positioner face plate characterized by being made . Core connecting jig for connecting a plurality of cores composed of a structural member such as a square steel pipe, a circular steel pipe, an H-shaped steel, or an SRC member assembled into a cross pillar structure, and a rectangular diaphragm to which the structural member is temporarily fixed. In
Four pairs for supporting the core in a horizontal state by clamping the four corners of adjacent diaphragms with support members interposed between the adjacent diaphragms at four corners with a predetermined interval therebetween . A clamping member of
Four blocks having a size equal to or smaller than the distance and arranged between the adjacent diaphragms according to the position of the joint between the structural member and the diaphragm;
A connecting bar that connects the support members disposed at the four corners of the diaphragm in a direction along the four sides of the diaphragm;
Have
The core connecting jig is characterized in that each block is supported with respect to the connecting bar so that the position of the block can be adjusted in a direction perpendicular to the connecting bar from a central portion of the connecting bar . 2. The positioner face plate according to claim 1, wherein a size of the block is 0.5 mm to 1.0 mm smaller than a distance between the diaphragm and the face plate. The core connecting jig according to claim 2, wherein a size of the block is 0.5 mm to 2.0 mm smaller than an interval between the adjacent diaphragms.

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