JP2019070266A - Jig for correction of steel column - Google Patents

Abstract

To provide a jig which contributes to the reduction of the labor required to correct the misplacement of steel for columns.SOLUTION: The jig (10) comprises a forceps member (20) having one end and the other end, a shaft member (22) attached to the forceps member, and a screw member (24) screwed to one end of the forceps member. The forceps member is disposed such that the tip of the shaft member and the other end of the forceps member face one and the other of a lower steel frame (12) and an upper steel frame (14), respectively, and the shaft member is passed through one of two erection pieces (16, 18) having holes (19) attached to the lower steel frame and the upper steel frame respectively.SELECTED DRAWING: Figure 1

Description

  The present invention is directed to a mistake that occurred between the lower steel frame previously installed and the upper steel frame added to the lower steel frame in the method of constructing a steel column, that is, the horizontal direction of the upper steel frame relative to the lower steel frame. The present invention relates to a jig used to correct deviations related to

  Heretofore, jigs have been proposed which are used for such correction of errors. This jig comprises a plate body having a main body and a hook portion, a pair of nuts respectively attached to upper and lower opposite end surfaces of the plate body, and a pair of bolts screwed to both the nuts. The hook portion protrudes from the body substantially in parallel with the nut.

  In the above-mentioned conventional jig, when used, the hook portion of the plate is passed between two erection pieces attached to the upper and lower steel frames, and the hook portion is one of the erection pieces of both steel frames, for example, the lower side. Pull on the steel erection piece and then advance the bolt screwed on the nut facing the surface of the lower steel erection piece at this time to bring its tip into contact with the surface of the lower steel erection piece . Next, a bolt screwed to a nut facing the surface of the upper steel erection piece is advanced to apply a horizontal external force to the upper steel erection piece surface. This causes the upper steel frame to move horizontally on the lower steel frame and corrects for a misregistration that is a horizontal offset of the upper steel frame relative to the lower steel frame.

Japanese Patent Application Publication No. 2002-194897

  By the way, the upper steel frame is a heavy load, and the rotation operation of the bolt for moving this horizontally requires much labor. In addition, it is desirable that the effort required for the erroneous correction work performed at a high place be as small as possible from the viewpoint of securing safety.

  An object of the present invention is to provide a jig which contributes to the reduction of the labor required for correcting the steel frame for a column.

  The present invention relates to a jig that is used to correct a misalignment that has occurred between the lower steel frame for a previously installed column and the upper steel frame for a column connected to the lower steel frame. The jig includes a forceps member having one end and the other end, a shaft member attached to the forceps member, and a screw member screwed to one end of the forceps member. The forceps member is disposed such that the tip end of the screw member at one end and the other end of the forceps member respectively face one and the other of the lower steel frame and the upper steel frame, and the shaft member is the lower And one hole of two erection pieces having holes respectively attached to the upper steel frame and the upper steel frame.

  According to the present invention, when the screw member facing one of the upper and lower steel frames, for example, the lower steel frame, is rotated and its tip is pressed against the surface of the lower steel frame, the forceps member becomes the shaft member. As it rotates around, one end of the forceps member moves away from the surface of the lower steel frame and the other end of the forceps member approaches and strikes the surface of the upper steel frame which is the other steel frame. When the rotation operation of the shaft member is continued, the lower erection piece (therefore, the lower steel frame to which the erection piece is attached) is used as a reaction force support, and the forceps member is horizontal to the upper steel frame at the other end. Exert an external force. As a result, the upper steel frame moves horizontally on the lower steel frame to correct or eliminate the error between the two steel frames.

  In the present invention, a relatively small external force can be applied to the lower steel frame via the forceps member, while a relatively large external force can be applied to the upper steel frame. From this, it is possible to make the force required for the rotation operation of the screw member relatively small, thereby reducing the labor required for the correction of the error. Further, the jig according to the present invention has a simple structure, is lighter in weight, and is easy to handle as compared with the above-mentioned conventional misregistration correction jig. This also contributes to the reduction of effort for correction of errors.

  The forceps member comprises a pair of plate pieces arranged at a distance from each other, a connecting piece connected to both plate pieces at a part of their peripheral edge, and two block pieces fixed to both plate pieces. can do. Here, the two block pieces respectively define one end and the other end of the forceps member, and the two plate pieces are capable of receiving a part of one of the two erection pieces in a space between them. .

  Both plate pieces can further receive a part of the other of the two erection pieces in a space between them, and a block piece defining the other end of the forceps member is a space between the plate pieces. And a groove capable of receiving a part of the other of both erection pieces. According to this, a part of the upper erection piece can be received in both the groove of the block piece and the space between the two plate pieces, and under this condition, correction of the error between the two steel frames can be performed. .

  The forceps member may also be composed of one plate and two block pieces fixed to the plate and defining one end and the other end of the forceps. Here, the plate piece is bent in a hat shape along one of the two erection pieces.

  Instead of the screw member, this can be a hydraulic jack. Here, the hydraulic jack is supported by the ladder member, and a piston of the hydraulic jack penetrates a hole provided at one end of the ladder member.

It is a perspective view when it sees from one direction of the jig | tool for misregistration correction which concerns on one Embodiment of this invention. It is a perspective view of the jig shown in FIG. 1 when it sees from another direction. It is a front view of the jig shown in FIG. 1 attached to the lower steel frame. It is a right view of a jig shown in FIG. FIG. 5 is a right side view of the jig shown in FIG. 3 after the correction of the error. It is a side view of the jig shown in FIG. 1 attached to the upper steel frame instead of the lower steel frame. It is a jig | tool similar to the jig | tool shown in FIG. 1 to which the hydraulic jack was attached instead of the screw member, and is a right side view of the jig attached to the lower steel frame. It is a perspective view when it sees from one direction of the jig | tool for correction | amendment corrections which concerns on other embodiment of this invention. It is a perspective view of the jig shown in FIG. 8 when it sees from another direction. It is a front view of the jig concerning a further another embodiment attached to the lower steel frame. It is a right view of the jig shown in FIG.

  Referring to FIGS. 1 and 2, a jig according to an embodiment of the present invention is generally indicated at 10.

  As shown in FIGS. 3 to 5, in the construction of the steel frame columns constituting the building to be constructed, the jig 10 is provided with a lower steel frame 12 for a column which is previously installed and extends vertically, and the lower steel frame. It is used to correct any misalignment between the upper steel 14 for the column to be added, i.e. the horizontal movement of the upper steel 14 with respect to the lower steel 12 (FIG. 4).

  Both steel frames 12 and 14 shown in the drawing are square steel pipes each having a rectangular cross-sectional shape, and each steel frame 12 and 14 has four side surfaces. The upper steel frame 14 is suspended and mounted on the lower steel frame 12 with a crane-like lifting machine (not shown) for attachment to the lower steel frame 12.

  Plate-like erection pieces 16 and 18 are attached to upper and lower ends of the steel frames 12 and 14, respectively, for the purpose of suspending the steel frames 12 and 14 by the loading machine. Each erection piece 16, 18 is at the center of each side of the rectangle which is the cross sectional shape of each steel frame 12, 14, ie, at the center in the width direction of the side, against the side of each steel frame 12, 14 It is orthogonal and extends vertically. Each illustrated erection piece 16, 18 has a generally rectangular shape, and one side end 16a, 18a fixed to each steel frame 12, 14 by welding and the other side end opposite to the one side end 16b, 18b (see FIG. 4). Each erection piece 16, 18 is provided with a hole 19 passing therethrough.

  Referring again to FIGS. 1 and 2, the jig 10 has a forceps member 20 having one end (lower end in the figure) and the other end (upper end), and a shaft member 22 attached to the forceps 20. And a screw member 24 screwed to the one end of the forceps member 20.

  The jig 10 is attached to the erection piece 16 (see FIGS. 3 to 5) located at the upper end of the lower steel frame 12 in use, or, as shown in FIG. 6, at the lower end of the upper steel frame 14 It is attached to the positioned erection piece 18 (see FIG. 6). Alternatively, two jigs 10 are also attached to both the upper and lower steel plates 12, 14 of the erection pieces 16, 18 (not shown).

  Attachment of the jig 10 to the respective erection pieces 16, 18 is performed by passing the shaft member 22 through the holes 19 of the respective erection pieces 16, 18. At this time, the forceps member 20 is rotatable about the axis of the shaft member 22. Further, at this time, in the example shown in FIGS. 3 to 5, the distal end portion 24 a of the screw member 24 of the forceps member 20 and the other end portion of the forceps member 20 are the side of the lower steel frame 12 and the upper steel 14 And the side of the upper steel frame 14 and the side of the lower steel frame 12 in the example shown in FIG.

  The illustrated forceps member 20 comprises a pair of steel plate pieces 26 arranged at a distance from each other, a steel connecting piece 28 connected to both plate pieces 26 at a part of their periphery, and both plate pieces 26. And two steel block pieces 30, 32 fixed to each other. The two block pieces 30, 32 respectively define the one end and the other end of the forceps member 20, respectively.

  The two plate pieces 26 have a mutual spacing larger than the thickness dimension of the respective erection pieces 16, 18, and a part of each of the erection pieces 16, 18 between the two plate pieces 26, that is, the other A space 33 is defined which can receive a portion from the side end 16b, 18b to the near side from the one side end 16a, 18a (see FIG. 4). From this, when the jig 10 is used, the forceps member 20 can be disposed substantially at the center in the width direction of the side surfaces of the upper and lower steel frames 12 and 14.

  Further, in the illustrated example, two openings 35 connected to the space 33 respectively between one block piece 30 and the connection piece 28 and between the other block piece 32 and the connection piece 28 (see FIG. 2). See). Both plate pieces 26 further have two holes 34 (FIG. 3) opposite to each other. Each hole 34 has approximately the same diameter as the hole 19 of the erection piece.

  The shaft member 22 passed through both holes 34 and both holes 34 is located between one end (block piece 30) of the forceps member 20 and the other end (block piece 32). More precisely, as shown in FIG. 3, the distance a from one end (block piece 30) of the forceps member 20 to the axis of the shaft member 22 is the distance from the other end (block piece 32) of the forceps member 20 to the shaft member It is located at a point (a> b) greater than the distance b to the axis of 22. The ratio a: b of the distance a and the distance b can be set arbitrarily. For example, in the example shown in FIGS. 1 to 6, a: b = 2: 1 (FIGS. 1 to 6), and in the example shown in FIGS. 7 to 11 described later, a: b = 3: 1 (FIGS. 7 to 11).

  The illustrated shaft member 22 is a bolt (hereinafter referred to as a bolt 22 as required). The bolt 22 is passed through the holes 34 of the plate pieces 26 at its shaft. Preferably, a nut 36 is screwed into the shaft portion of the bolt 22 after the jig 10 is attached to the erection piece. The shaft member 22 can be made of, for example, a pin bolt, a pin or the like instead of the bolt.

  Further, the screw member 24 is a bolt, and in the illustrated example, a hexagonal socket bolt (hereinafter referred to as a bolt 24 as required). The bolt 24 is screwed to and penetrates one block piece 30 whose shaft portion defines the one end of the forceps member 20. That is, the screw thread of the shaft portion of the bolt 24 is engaged with a screw groove (not shown) provided on one block piece 30 and passing through the block piece. The bolt 24 can be moved in the axial direction of the screw groove relative to the forceps member 20 by its rotation operation, and when the jig 10 is used, the tip 24a of the bolt 24 is pressed against the side surface of the steel frame Can. The tip 24a of the bolt 24 preferably comprises a part of a spherical surface. As a result, the contact area of the tip 24 a of the bolt 24 with the side surface of the steel frame can be made smaller, and the rotational force to be given to the bolt 24 can be made smaller.

  As shown in FIG. 7, the screw member 24 may be replaced by a hydraulic jack 37 instead of the bolt. The hydraulic jack 37 is supported by the forceps member 20 at a block piece 30 defining one end thereof, and a piston 37a of the hydraulic jack 37 penetrates a hole (not shown) provided in the block piece 30. In this example, when the jig 10 is used, the hydraulic jack 37 is operated to move the piston 37a linearly to the side of the lower steel frame 12 or in the opposite direction, similarly to the bolt 24. The tip of the piston 37a can be pressed against the side surface of the steel frame. The tip of the piston 37a likewise preferably consists of part of a spherical surface.

  The other block piece 32 defining the said other end of the forceps member 20 is part of both erection pieces 16, 18, more particularly with reference to FIG. 4, one side end of the upper erection piece 18 The lower corner 38 including a portion of 18a can be received, and in the example shown in FIG. 6, the upper corner 40 including a portion of one side end 16a of the lower erection piece 16 is received. It has a groove 42 which is possible (see FIGS. 1 and 3). The groove 42 is continuous with the space 33 through the opening 35 between the other block piece 32 and the connecting piece 28. Thus, the opening 35 can receive the other portions 44 (FIG. 4) and 45 (FIG. 6) which are continuous with the corner 38 of the erection piece.

  Instead of the above-described example, as shown in FIGS. 8 and 9 and FIGS. 10 and 11, the other block piece 32 may have no groove 42. In the case of the forceps member 20 provided with the block pieces 32 not having the grooves 42, when the jig 10 is used, as shown in FIGS. 10 and 11, the block pieces 32 against the upper steel frame 14 have their erection pieces 18 (In the case where the forceps member 20 is attached to the upper steel frame 14, it is opposed to the lower steel frame 12 at the upper position of the erection piece 16). Further, the connecting piece 28 connected to both the plate pieces 26 extends continuously between the two block pieces 30 and 32, so the opening 35 in the example shown in FIGS. 1 and 2 does not exist.

  As shown in FIGS. 10 and 11, a part of the forceps member 20 of the jig 10 is replaced with the example shown in FIGS. It can be configured. On the plate piece 46, two block pieces 30, 32 as in the example shown in FIGS. 8 and 9, which respectively define the one end and the other end of the forceps member 20, are fixed. In this example, the plate pieces 46 are bent in a hat shape along the respective erection pieces 16, 18. More specifically, the plate 46 has one side (left side as viewed in FIG. 10) of the two opposite sides of the erection piece 16 and the other side (right side). It is bent in a hat shape so as to cover the upper and lower end surfaces connected to this. According to this, when the jig 10 is attached to the erection piece 16 of the lower steel frame 12, the block pieces 30, 32 are respectively positioned below the lower erection piece 16 and the lower position of the upper erection piece 18, It can be located at a substantially central position in the width direction of the side surfaces of the steel frames 12 and 14. However, the plate piece 46 can be made of a flat plate or a rod-like body.

In the jig 10 shown in FIGS. 10 and 11, the plate 46 is provided with a hole (not shown) passing therethrough, and the shaft portion of a bolt forming an example of the shaft member 22 is passed through the hole. ing. The plate 46 is rotatable about the axis of the shaft member 22. When attaching the jig 10, the shaft portion of the bolt 22 is sequentially passed through the hole 19 of the lower erection piece 16 of the steel frame 12 and the hole of the plate piece 46 of the forceps member 20, and the nut 36 is further inserted into the shaft portion. It is screwed together.
Further, the shaft member 22 can be fixed to the plate piece 46 instead of the above-described example.

  In correcting the upper steel frame 14 with respect to the lower steel frame 12, first, the jig 10 is attached to the lower erection piece 16.

  The jig 10 is attached by removing the bolt 22 from the two plate pieces 26 of the forceps member 20, and then the two plate pieces 26 in the space 33 are a part of the erection piece 16 of the steel frame 12 below. Receiving, the holes 34 of the plate pieces 26 are in alignment with the holes 19 of the lower erection piece 16. Next, the shaft of the bolt 22 is passed through the holes 34 and 19 and the nut 36 is attached to the shaft of the bolt. At this time, the tip end portion 24a of the bolt 24 and the block piece 32 of the forceps member 20 face the side surface of the lower steel frame 12 and the side surface of the upper steel frame 14, respectively, or contact these surfaces. Further, at this time, the groove 42 of the block piece 32 and the opening 35 between the plate pieces 26 respectively receive the corner portion 38 of the erection piece 18 of the upper steel frame 14 and the other portion connected to the corner portion.

  Next, the bolt 24 is rotated to advance its tip 24 a toward the side of the lower steel frame 12 and press it. As a result, the forceps member 20 rotates clockwise around the shaft member 22 as viewed in FIG. 4, and the block piece 30 defining one end of the forceps member 20 gradually separates from the side surface of the lower steel frame 12. A block piece 32 defining the other end of the member abuts the side of the upper steel frame 14.

  When the rotation operation of the bolt 24 is continued, the lower erection piece 16 (therefore, the lower steel frame to which the erection piece is fixed) slides while the other end (block piece 32) of the forceps member 20 slides on the surface of the upper steel frame 14. 12) acts as a reaction force support and applies horizontal external force (pressing force) to the upper steel frame 14; The upper steel frame 14 receiving the horizontal external force horizontally moves on the lower steel frame 12. The rotation operation of the screw member 24 is performed until the deviation e is eliminated. This completes the correction of the mistake. After correcting for errors, the jig 10 can be removed from the erection piece 16 and used for reuse.

  The forceps member 20 exerts the function of the forceps in the correction of the misregistration. Therefore, by applying a relatively small force to one end (block piece 30) of the forceps member 20, the other end (block piece 32) of the forceps member 20 is relatively large to the upper steel frame 14 which is a heavy load. Power can be applied. From this, the force required for the rotation operation of the bolt 24 performed to apply a force to the one end portion (block piece 30) of the forceps member 20 can be made relatively small, thereby making a correction of the misregistration. The labor required can be reduced.

  Further, in use of the jig 10 (FIG. 6) attached to the upper erection piece 18 with the upside down, the one end (block piece 30) and the other end (block piece 32) of the forceps member 20 are used. ) Are opposed to the upper steel frame 14 and the lower steel frame 12, respectively. At this time, the groove 42 of the block piece 32 and the opening 35 between the plate pieces 26 respectively receive the corner portion 40 of the lower erection piece 16 of the steel frame 12 and other portions connected to the corner portion. In this state, when the bolt 24 is rotated, as shown in FIG. 6, the forceps member 20 rotates clockwise around the shaft member 22, and the other end (block piece 32) of the forceps member 20 is the lower steel frame 12 Pressed against the surface of the On the other hand, the tip 24 a of the bolt 24 slides on the side of the upper steel frame 14. As a result, with the lower steel frame 12 as a reaction force support, the upper steel frame 14 receives a horizontal external force (tensile force) from the shaft member 22 penetrating the erection piece 18. As a result, the upper steel frame 14 horizontally moves on the lower steel frame 12, and the mistake of the upper steel frame 14 with respect to the lower steel frame 12 is corrected or eliminated.

  In the example of the jig 10 shown in FIGS. 1 to 6, the pair of plate pieces 26 constituting the forceps member 20 receive a part of each of the erection pieces 16, 18 and sandwich it between the plate pieces 26. When installing the jig 10, the forceps member 20 can be disposed at the central part in the width direction of the upper and lower steel frames 12, 14, and thereby, the upper steel frame 14 or the lower steel frame 12 at the central part. It is possible to apply a horizontal external force to the

  Also, the block pieces 32 receive the corners 38, 40 of the respective erection pieces 16, 18, respectively. From this, even if the welded fillets of each of the erection pieces 16 and 18 have a relatively wide width, the block piece 32 is against the side of the upper steel frame 14 or the lower steel frame 12 Abutment across the weld is possible.

Reference Signs List 10 jig 12 lower steel frame 14 upper steel frame 16, 18 erection piece 19 hole 20 forceps member 22 shaft member (bolt)
22a Bolt tip 24 Screw member (bolt)
26 plate pieces 28 connecting pieces 30, 32 block pieces 34 holes 37 hydraulic jacks 37 a pistons 38, 40 corner portions 42 grooves

Claims (5)

A jig used to correct a misunderstanding that has occurred between a lower steel frame for a previously installed column and an upper steel frame for a column connected to the lower steel frame,
A forceps member having one end and the other end;
A shaft member attached to the forceps member;
And a screw member screwed to one end of the forceps member,
The forceps member is disposed such that the tip end of the shaft member and the other end of the forceps member face one and the other of the lower steel frame and the upper steel frame, respectively.
The shaft member is a jig that is passed through one hole of two holes having an erection piece respectively attached to the lower steel frame and the upper steel frame. The forceps member comprises a pair of plate pieces arranged at a distance from each other, a connecting piece connected to both plate pieces at a part of their peripheral edge, and two block pieces fixed to both plate pieces.
The two block pieces respectively define one end and the other end of the forceps member,
The jig according to claim 1, wherein both plate pieces are capable of receiving a part of one of the two erection pieces in a space between them. Both plate pieces are further capable of receiving a part of the other of the two erection pieces in the space between them,
The jig according to claim 2, wherein the block piece defining the other end of the forceps member has a groove capable of receiving a part of the other of the two erection pieces and continuing to the space between the two plate pieces. The forceps member comprises a plate and two block pieces fixed to the plate and defining one end and the other end of the forceps, respectively.
The jig according to claim 1, wherein the plate piece is bent in a hat shape along one of the two erection pieces. The screw member comprises a hydraulic jack replaced with the screw member;
The jig according to claim 1, wherein the hydraulic jack is supported by the forceps member, and a piston of the hydraulic jack passes through a hole provided at one end of the forceps member.

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