JP6997940B2 - Jig for rotating the structure Shinbashira - Google Patents

Description

The present invention relates to a jig for rotating a structural pillar used for connecting a plurality of divided members to form a single structural pillar.

In parallel with the construction of the above-ground part of the building structure, as a construction method of the reverse-casting column in the reverse-casting method in which the underground structure is constructed from the upper floor to the lower floor, the concrete of the cast-in-place pile to be constructed at the construction site. There is known a structural pillar construction (see Patent Document 1) in which the lower end of a pillar member (construction pillar) of an underground structure is buried and integrated.

The general Shinbashira 2 (see Fig. 5) used for such Shinbashira construction has a larger length as the scale of the building structure, especially the depth of the underground structure, increases. Since the Shinbashira 2 cannot be loaded on a truck or the like and transported, conventionally, it is manufactured by being divided into predetermined length dimensions in advance, and they are separately transported and carried to the construction site. They are connected in the field by welding or the like.

As a conventional method of connecting the divided members to form the structural pillar 2, as shown in FIG. 6B, first, each of the divided members 3 of the structural pillar 2 divided into a plurality of parts is formed. , Is installed in the holding mechanism 8a of the holder 8 which is formed in an annular shape and has a rotating mechanism that can rotate around its central axis using a reversing machine 10, and the dividing member 3 is installed so that the central axes of the holders match each other. The middle portion of the length is held by a plurality of holders 8.

Then, as shown in FIG. 6A, the plurality of divided members 3 are laid sideways, and their respective length portions are along the length direction (left-right direction in the figure) of the structural pillar 2. Arrange them so that they extend horizontally.

Then, while rotating the plurality of split members 3, the joint portions W in which the end faces of the adjacent split members 3 face each other are joined by welding or the like over the entire circumference of the structural pillar 2 so as to be adjacent to each other. The dividing members 3 are joined together to form a single structural pillar 2.

Japanese Unexamined Patent Publication No. 3-295931

However, in the conventional method of forming the structural pillar as described above, when the size of the structural pillar 2 becomes larger than a certain size, it cannot be held by the ready-made holder 8 and is laid sideways. There is a problem that the split member 3 cannot be connected in the state of being in the state.

In such a case, conventionally, a vertical hole is excavated at the construction site, the dividing member 3 of the structural pillar 2 is vertically arranged inside the vertical hole, and the dividing member 3 is added vertically upward. By welding or the like, one structural pillar 2 was formed in a vertically raised state.

However, such a method requires various work and costs such as securing a space for vertical holes at the construction site and securing a vehicle for aerial work required for welding work, which delays the construction period. And there was a problem of increasing the construction cost.

Therefore, in view of the above problems, in the present invention, when a plurality of divided members are connected to form a single structural pillar, the plurality of divided members are laid sideways regardless of the size or the like. It is an object of the present invention to provide a jig for rotating a structural true pillar that can be connected in a state of being.

The jig for rotating a structural pillar according to claim 1 of the present invention is to solve the above-mentioned problems.
By holding each of the plurality of dividing members on the holder so that their central axes coincide with each other, and connecting the ends of the adjacent divided members while rotating the holder around the central axis. It is a jig for rotating the structural pillar used to form the structural pillar in a state where it is laid sideways.
It extends elongated in the direction of the central axis of the rotating jig, and the intermediate portion thereof can be held by the holding tool so that the central axis of the holding tool and the central axis of the rotating jig coincide with each other. With a holding unit configured to
One end in the length direction of the dividing member is integrally provided at one end of the holding portion in the length direction so that the central axis of the dividing member and the central axis of the rotating jig coincide with each other. It is characterized by having a connecting part configured so that it can be fixed to the end part.

According to the jig for rotating the structural pillar 2 having the above configuration, the dividing member of the structural pillar 2 having a wide portion 2c at the upper end having a size that cannot be held by the holder 8 as shown in FIG. Even if it is 3, by attaching the rotating jig 12 to the upper end portion of the dividing member 3, the end portion of the dividing member 3 on the wide portion 2c side is passed through the holding portion 14 of the rotating jig 12. Since it can be held by the holder 8, it can be joined while lying sideways.

As a result, it is not necessary to perform the work of forming the structural pillar in the vertically raised state inside the vertical hole as described above, so that various work and costs for that work are not incurred, which is accompanied by it. , It is possible to prevent delay in construction period and increase in construction cost.

Further, the structure pillar 2 having a wide portion 2c at the upper end portion as shown in FIG. 7 has a high center of gravity, and if the work is performed in a vertically raised state, it is likely to be affected by wind or the like and become unstable. By connecting them while lying sideways, you can work more safely.

Further, the jig for rotating the structural pillar according to claim 2 of the present invention is
The holding portion is characterized in that the cross-sectional shape perpendicular to the length direction thereof is formed to be substantially the same as the cross-sectional shape perpendicular to the length direction of the structural pillar. be.

According to the jig for rotating the structural pillar having the above configuration, the cross-sectional shape of the holding portion 14 is formed to be substantially the same as the cross-sectional shape of the general structural pillar 2 as shown in FIG. It is possible to obtain a sufficiently high strength equivalent to that of the structural pillar 2, and a part of the members used when manufacturing the split member 3 of the structural pillar 2 in a factory or the like is diverted to a rotating jig. The holding portion 14 of 12 can be formed.

Further, the jig for rotating the structural pillar according to claim 3 of the present invention is
The connecting portion is characterized in that it can be attached to and detached from one end of the dividing member in the length direction.

According to the rotating jig of the structural pillar having the above configuration, since the connecting portion of the rotating jig 12 is configured to be detachably fixed to the split member 3 of the structural pillar 2, the split member After the work of connecting 3 is completed, the rotating jig 12 can be removed, and the removed rotating jig 12 can be used again.

Further, the jig for rotating the structural pillar according to claim 4 of the present invention is
It is characterized in that a suspension portion is provided at the other end portion in the length direction of the holding portion.

According to the jig for rotating the structural pillar having the above configuration, since the suspension portion 18 is provided at the other end of the holding portion 14 in the length direction, a shackle or the like is attached to the suspension hole 18c to form a crane. Since the rotating jig 12 can be lifted by using the above, it is possible to improve the handling of the rotating jig 12 at the construction site.

Further, by leaving the rotating jig 12 without removing it after the work of connecting the dividing members 3 is completed, the rotating jig 12 can be lifted by using a crane or the like, and the structural pillar 2 can be lifted. After forming the structure pillar 2 at the construction site, it is possible to improve the efficiency of work such as raising the structure pillar 2, moving to the pile hole, and descending into the pile hole.

Further, since the side plate portions 18b to which the shackle and the like can be attached are provided at four locations on the outer surface of the end plate portion 18a of the suspension portion 18, a jig for lifting the lower end portion side of the structure pillar 2 is provided. Regardless of the position of the outer peripheral portion of the structure true pillar 2, the side plate portion 18b corresponding to this can be selected from four locations and a shackle or the like can be attached, so that the rotation jig 12 can be attached. It is possible to smoothly carry out work such as raising the jig 12 regardless of the direction around the central axis of the rotating jig 12 when the jig 12 is attached.

Further, the jig for rotating the structural pillar according to claim 5 of the present invention is
In a jig for rotating a structural pillar, which is provided between a holder having a rotating mechanism and the structural pillar and transmits the rotational force of the holder to the structural pillar.
A holder that is connected to the holder and is rotatable,
It is characterized by having a connecting portion that extends outward from one end of the holding portion coaxially with the rotation center axis of the holding portion and is detachable from the structural pillar. Is.

According to the rotating jig of the structural pillar 2 having the above configuration, the rotational force of the holder 8 rotated by the rotating mechanism is transmitted to the dividing member 3 of the structural pillar 2 via the rotating jig 12. Therefore, the shape and size of the structural pillar 2 can be freely determined regardless of the shape and size of the holding mechanism 8a of the holder 8.

Further, the jig for rotating the structural pillar according to claim 6 of the present invention is
In the cross section perpendicular to the rotation center axis, the dimension from the rotation center axis to the outer edge of the holding portion and the dimension from the rotation center axis to the outer edge of the connecting portion are different.

According to the jig for rotating the structural pillar of the above configuration, even if the size of the dividing member 3 of the structural pillar 2 is larger (or smaller) than the size that can be held by the holder 8, it rotates. It can be held by the holder 8 via the jig 12.

Further, the method of rotating the structural pillar according to claim 7 of the present invention is as follows.
A holding portion that is connected to a holding tool having a rotating mechanism and is rotatable, and a holding portion that extends outward from one end of the holding portion coaxially with the rotation center axis of the holding portion to form a Shinbashira. In the method of rotating a structural pillar using a rotating jig equipped with a detachable connecting part,
It is characterized in that the rotational force of the holder is transmitted to the structural pillar in a state where the holding portion, the connecting portion and the rotation center axis of the structural pillar are all aligned to rotate the structural pillar. It is a thing.

According to the method of rotating the structural pillar of the above configuration, as described above, the split member 3 of the structural pillar 2 is held by the holder 8 via the rotation jig 12. Since the split members 3 can be joined together in a state of being laid down sideways regardless of the size, it is not necessary to perform the work of forming a structural pillar in a state of being raised vertically inside the vertical hole. As a result, it is possible to prevent delays in construction period and increase in construction costs.

As described above, according to the jig for rotating the structural pillar according to the present invention, when a plurality of dividing members are connected to form a single structural pillar, the size and the like of the plurality of divided members are adjusted. Regardless, it can be connected while lying sideways.

It is a front view which shows the rotation jig 12 of the structural true pillar which concerns on one Embodiment of this invention. It is a figure showing the rotation jig 12 shown in FIG. 1, FIG. 2A is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 2B is a line arrow BB in FIG. It is a sectional view. It is a figure for demonstrating the usage of the rotation jig 12, and is the enlarged front view which shows the periphery of the upper end part of the division member 3 of the structure true pillar 2 which attached the rotation jig 12 to the upper end part. Is. It is a schematic side view for demonstrating the method of connecting a plurality of division members 3 including the division member 3 having a wide portion 2c using a rotation jig 12 to form a structural pillar 2. FIG. 5A is a side view thereof, and FIG. 5B is a cross-sectional view taken along the line CC in FIG. 5A, showing a general structural pillar 2. 5 (c) is a cross-sectional view taken along the line DD in FIG. 5 (a). It is a figure for demonstrating the method of connecting a plurality of division members 3 to form a structural pillar 2, FIG. 6 (a) is a schematic side view thereof, and FIG. 6 (b) is FIG. 6 (a). ) Is a schematic cross-sectional view taken along the line EE. It is a side view which shows the structure Shinbashira 2 which has a wide part 2c at the upper end part.

Hereinafter, a mode for carrying out the jig for rotating the structural pillar according to the present invention will be specifically described with reference to the drawings.

1 to 4 are views for reference to explain the rotation jig 12 according to the embodiment of the present invention.

As shown in FIG. 1, the rotation jig 12 according to the present embodiment is a holding portion that extends elongated in the central axis direction of the rotation jig 12 (up and down direction in the figure, including the rotation center axis according to claim 5). 14 and a connecting portion 16 provided at one end (lower side in the figure) of the holding portion 14 in the length direction are provided.

As shown in FIG. 2A, the holding portion 14 of the rotating jig 12 has a substantially cross-shaped cross-sectional shape perpendicular to the length direction of the holding portion 14 (vertical direction in FIG. 1). The plate-shaped web portion 14a is joined to each of the four tips of the substantially cross-shaped cross section of the web portion 14a at a substantially right angle, and extends along the respective tips in the length direction of the holding portion 14. It is provided with four plate-shaped flange portions 14b provided as described above.

That is, the cross-sectional shape of the holding portion 14 perpendicular to the length direction is abbreviated as the cross-sectional shape of the general structural pillar 2 as shown in FIG. 5 (see FIGS. (B) and (c)). It is formed in the same shape.

The holding portion 14 has a width direction (up / down / left / right direction in FIG. 2A) perpendicular to the length direction thereof, and the division member 3 of the structural pillar 2 having the wide portion 2c shown in FIG. The length portion of the holding portion 14, which is smaller than the width dimension of the wide portion 2c provided at the upper end portion of the above, is installed and held by the holding mechanism 8a (see FIG. 6B) of the holder 8 having a rotating mechanism. The length of the portion 14 is formed so that the intermediate portion can be held by the holder 8.

As shown in FIG. 2B, the connecting portion 16 of the rotating jig 12 has a substantially cross-shaped cross-sectional shape perpendicular to the length direction of the connecting portion 16 (vertical direction in FIG. 1). The plate-shaped web portion 16a is joined to each of the four tips of the substantially cross-shaped cross section of the web portion 16a at a substantially right angle, and extends along the respective tips in the length direction of the connecting portion 16. It is provided with four plate-shaped flange portions 16b provided as described above.

The web portion 16a of the connecting portion 16 is provided with the thickness dimension and the width dimension of each of the four tip portions at the upper end portion of the dividing member 3 of the structural pillar 2 having the wide portion 2c shown in FIG. The thickness dimension and width dimension of the four tip portions of the web portion 2a of the wide portion 2c are formed to be substantially the same as the thickness dimension and width dimension of the four tip portions of the connecting portion 16, and the thickness dimension and width dimension of the four flange portions 16b of the connecting portion 16 are shown in the figure. It is formed to be substantially the same as the thickness dimension and the width dimension of the flange portion 2b of the structural pillar 2 shown in 7.

That is, the connecting portion 16 has a cross-sectional shape perpendicular to the length direction of the wide portion 2c provided at the upper end portion of the dividing member 3 of the structural pillar 2 having the wide portion 2c shown in FIG. It is formed to have substantially the same shape and the same size as the above.

The end of the connecting portion 16 opposite to the holding portion 14 (lower side in FIG. 1) is formed to be perpendicular and flat with respect to the length direction of the rotating jig 12 (vertical direction in FIG. 1). There is.

As a result, the end portion of the connecting portion 16 of the rotating jig 12 on the opposite side to the holding portion 14 has substantially the same shape as the upper end surface of the dividing member 3 of the structural pillar 2 having the wide portion 2c shown in FIG. And the connection end face 12a having substantially the same size is formed.

Further, at the end portion of the connecting portion 16 on the holding portion 14 side (upper side in FIG. 1), the width dimension of the web portion 16a gradually decreases from the middle portion of the length of the connecting portion 16 toward the upper end portion, and accordingly. The four flange portions 16b are formed so as to bend from an intermediate portion of the length of the connecting portion 16 toward the central axis and to be inclined toward the outer surface of the flange portion 14b of the holding portion 14.

Then, as shown in FIG. 1, in the connecting portion 16, the central axis of the connecting portion 16 and the central axis of the holding portion 14 rotate at one end (lower side in the figure) of the holding portion 14 in the length direction. It is arranged so as to coincide with the central axis of the jig 12, and is provided integrally with the holding portion 14.

Further, as shown in FIG. 1, the web portion 16a and the flange portion 16b near the connection end surface 12a of the connecting portion 16 are provided with a plurality of bolt holes 16c that penetrate the web portions 16a and the flange portions 16b in the thickness direction. Has been done.

On the other hand, as shown in FIG. 1, the rotating jig 12 is lifted or moved by using a crane or the like to the other end (upper side in the figure) of the holding portion 14 of the rotating jig 12 in the length direction. A hanging portion 18 is provided for hanging.

As shown in FIGS. 1 and 2A, the hanging portion 18 of the rotating jig 12 has a predetermined thickness dimension in the length direction of the rotating jig 12, and the planar shape is substantially octagonal. It is provided with a formed plate-shaped end plate portion 18a and four elongated plate-shaped side plate portions 18b provided on the outer surface of the end plate portion 18a and extending to the opposite side (upper side in FIG. 1) from the holding portion 14. ..

As shown in FIG. 2A, the end plate portion 18a of the suspension portion 18 is integrally provided at the other end portion in the length direction of the holding portion 14, and has eight sides forming its planar shape. Four sides of the four sides are formed along the outer sides of each of the four flange portions 14b in a cross section perpendicular to the length direction of the holding portion 14.

The side plate portion 18b of the suspension portion 18 is provided integrally with the end plate portion 18a at the substantially central portion of each of the four outer surfaces of the end plate portion 18a corresponding to the outer side of the flange portion 14b. A suspension hole 18c is formed in the plate portion extending to the side opposite to the holding portion 14 of the side plate portion 18b, which penetrates the side plate portion 18b from the central axis of the rotation jig 12 toward the outside in the radial direction.

Like the structural pillar 2, the rotating jig 12 is made of a steel material having sufficient strength, and the holding portion 14, the connecting portion 16, and the suspending portion 18 are integrally provided.

Next, using the rotation jig 12 according to the present embodiment, a plurality of division members 3 including the division member 3 of the structural pillar 2 having the wide portion 2c as shown in FIG. 7 are connected to each other. A method of forming the book structure Shinbashira 2 will be described.

First, as shown in FIG. 3, the rotating jig 12 is connected to the upper end portion of the dividing member 3 (see FIG. 7) of the structural pillar 2 having the wide portion 2c, with the connecting portion 16 of the rotating jig 12. The end surface 12a and the upper end surface of the dividing member 3 are abutted against each other, and the central axis of the dividing member 3 and the central axis of the rotating jig 12 are arranged so as to coincide with each other.

Then, as shown in FIG. 3, using the two connecting plates 20, the web portion 2a at the upper end of the adjacent dividing member 3 and the web portion 16a (and adjacent to each other) of the connecting portion 16 of the rotating jig 12. By simultaneously sandwiching the flange portion 2b at the upper end of the dividing member 3 and the flange portion 16b) of the connecting portion 16 of the rotating jig 12, and tightening these two connecting plates 20 from both sides using bolts and nuts. , The rotation jig 12 is fixed to the upper end portion of the split member 3.

Then, as shown in FIG. 4, the holding portion 14 of the rotating jig 12 so attached to the dividing member 3 and the rotating jig 12 of the dividing member 3 to which the rotating jig 12 is attached The ends on the opposite sides (left side in the figure) are respectively formed in an annular shape, and are installed in the holding mechanism 8a of the holder 8 having a rotating mechanism that can rotate around its central axis using a reversing machine 10. (See FIG. 6B) so that the central axis of the holder 8 and the central axis of the dividing member 3, that is, the central axis of the holder 8 and the central axis of the rotating jig 12 coincide with each other. The middle part is held by each holding tool 8.

Then, in a state where the plurality of division members 3 including the division member 3 to which the rotation jig 12 is attached are laid sideways, each length portion is in the length direction of the structural pillar 2 (left-right direction in FIG. 4). ), So that the central axes of the respective dividing members 3 are aligned and one end of the adjacent dividing member 3 in the length direction (left-right direction in FIG. 4) can be connected to each other. Deploy.

Then, using the plurality of reversing machines 10, all the holders 8 for holding the plurality of dividing members 3 including the dividing member 3 to which the rotating jig 12 is attached are simultaneously and at the same speed around the central axis thereof. By rotating, the divided members 3 arranged adjacent to each other are rotated around the central axis of the divided members 3 while being arranged so that the ends thereof can be connected to each other.

Then, while rotating the plurality of split members 3, the joint portions W in which the end faces of the adjacent split members 3 face each other are joined by welding or the like over the entire circumference of the structural pillar 2 so as to be adjacent to each other. The split members 3 are joined together.

In this way, by using the rotation jig 12 according to the present embodiment, a structure having a wide portion 2c having a size that cannot be held by the holder 8 at the upper end portion as shown in FIG. Even if it is the pillar 2, it can be connected while lying sideways.

That is, as shown in FIGS. 3 and 4, by attaching the rotation jig 12 to the upper end portion of the split member 3 of the structural pillar 2 having the wide portion 2c, the end portion of the split member 3 on the wide portion 2c side. Is the holding portion 14 of the rotating jig 12, the width dimension thereof is smaller than the width dimension of the wide portion 2c, and the length portion of the holding portion 14 is the holding mechanism 8a of the holder 8 having the rotation mechanism (FIG. 6 (FIG. 6). b) It can be installed in) and formed into a size that allows the holder 8 to hold an intermediate portion of the length of the holding portion 14.

Since the holding portion 14 of the rotating jig 12 can be held by the holding tool 8, even if the split member 3 of the structural pillar 2 having the wide portion 2c is used, the end portion on the wide portion 2c side thereof. Can be held by the holder 8 via the holding portion 14 of the rotating jig 12, and can be joined while being rotated around the central axis in a state of being laid sideways.

Therefore, according to the jig 12 for rotating the structural pillar according to the present embodiment, when a plurality of dividing members are connected to form one structural pillar, the plurality of divided members are formed. Can be joined together in a state of being laid sideways regardless of the size or the like.

As a result, it is not necessary to perform the work of forming the structural pillar in the vertically raised state inside the vertical hole as described above, so that various work and costs for that work are not incurred, which is accompanied by it. , It is possible to prevent delay in construction period and increase in construction cost.

Further, the structure pillar 2 having a wide portion 2c at the upper end portion as shown in FIG. 7 has a high center of gravity, and if the work is performed in a vertically raised state, it is likely to be affected by wind or the like and become unstable. By connecting them while lying sideways, you can work more safely.

Further, since the rotation jig 12 according to the present embodiment has a cross-sectional shape of the holding portion 14 formed to be substantially the same as the cross-sectional shape of the structural pillar 2, it is about the same as the structural pillar 2. A sufficiently large strength can be obtained, and a part of the members used when manufacturing the dividing member 3 of the structural pillar 2 in a factory or the like is diverted to form the holding portion 14 of the rotating jig 12. be able to.

Further, the rotating jig 12 according to the present embodiment is configured so that the connecting portion of the rotating jig 12 can be detachably fixed to the dividing member 3 of the structural pillar 2. Therefore, the dividing member After the work of connecting 3 is completed, the rotating jig 12 can be removed, and the removed rotating jig 12 can be used again.

Further, in the rotation jig 12 according to the present embodiment, since the suspension portion 18 is provided at the other end (upper side in FIG. 1) of the holding portion 14 in the length direction, a shackle is provided in the suspension hole 18c. Since the rotation jig 12 can be lifted by using a crane or the like by attaching the above, it is possible to improve the handling of the rotation jig 12 at the construction site.

Further, by leaving the rotating jig 12 without removing it after the work of connecting the dividing members 3 is completed, the rotating jig 12 can be lifted by using a crane or the like, and the structural pillar 2 can be lifted. After forming the structure pillar 2, it is possible to improve the efficiency of work such as raising the structure pillar 2, moving to the pile hole, and descending into the pile hole.

Further, since the side plate portions 18b to which the shackle and the like can be attached are provided at four locations on the outer surface of the end plate portion 18a of the suspension portion 18, a jig for lifting the lower end portion side of the structure pillar 2 is provided. Regardless of the position of the outer peripheral portion of the structure true pillar 2, the side plate portion 18b corresponding to this can be selected from four locations and a shackle or the like can be attached, so that the rotation jig 12 can be attached. It is possible to smoothly carry out work such as raising the jig 12 regardless of the direction around the central axis of the rotating jig 12 when the jig 12 is attached.

The present invention is not limited to the above-described embodiment, and various modifications can be made as long as the same object as the present invention can be achieved.

For example, in the rotation jig 12 according to the embodiment, as shown in FIG. 2A, the holding portion 14 of the rotation jig 12 has a cross-sectional shape perpendicular to the length direction thereof. The shape is substantially the same as the cross-sectional shape of the structural pillar 2 (see FIGS. 5 (b) and 5 (c)), but if the holder 8 can hold the middle portion of the length of the holding portion 14. The cross-sectional shape of the holding portion 14 may be any shape.

Further, in the rotating jig 12 according to the embodiment, the connecting portion 16 of the rotating jig 12 has a wide portion 2c whose end surface opposite to the holding portion 14 in the length direction thereof is shown in FIG. 7. It is formed to have substantially the same shape and size as the upper end surface of the split member 3 of the structure pillar 2 to be held, but is attached to the upper end portion of the split member 3 of the structure pillar 2 having the wide portion 2c. If possible, the connecting portion 16 may be formed in any shape.

Further, in the rotating jig 12 according to the embodiment, the connecting portion 16 of the rotating jig 12 is fixed to the dividing member 3 of the structural pillar 2 by using a connecting plate 20 and bolts and nuts. However, the connecting portion 16 of the rotating jig 12 and the dividing member 3 of the structural pillar 2 may be fixed by any means.

Further, in the rotation jig 12 according to the embodiment, as shown in FIG. 3, the connection end surface 12a of the rotation jig 12 and the upper end surface of the dividing member 3 face each other, and the end faces of each other are slightly opposed to each other. However, if the central axes of the rotating jig 12 and the dividing member 3 are aligned, the connection end surface 12a of the rotating jig 12 and the upper end surface of the dividing member 3 are in contact with each other. It may be fixed in a state.

If the connection end surface 12a of the rotating jig 12 and the upper end surface of the dividing member 3 are fixed in a state of being separated from each other without contacting each other, the connecting end surface 12a of the rotating jig 12 and the dividing member 3 are fixed. The upper end surfaces of the jigs do not have to be formed vertically and flatly with each other.

Further, in the rotating jig 12 according to the embodiment, as shown in FIG. 6, a holder 8 formed in an annular shape for holding the dividing member 3 and the holding portion 14 of the rotating jig 12. However, the holder 8 may not be formed in an annular shape as long as the holding portion 14 of the dividing member 3 and the rotating jig 12 can be held and rotated around the central axis thereof. ..

Further, in the rotation jig 12 according to the embodiment, the structural pillar 2 to which the rotation jig 12 is attached is, as shown in FIGS. 5 (b) and 5 (c), with respect to the length direction thereof. Although a vertical cross-sectional shape is formed with a web portion 2a formed in a substantially cross shape and four flange portions 2b provided substantially at right angles to each of the four tip portions of the web portion 2a. The structure pillar 2 is not limited to such a cross-sectional shape, and for example, the cross section of the structure pillar 2 may be formed in a substantially cross shape, an H shape, an I shape, or the like, or. , The structural pillar 2 may be formed in a square cylinder shape or a cylindrical shape.

Further, in the rotation jig 12 according to the embodiment, as shown in FIG. 4, the ends of the plurality of divided members 3 are arranged so as to face each other and the end faces thereof are slightly separated from each other. Although the plurality of divided members 3 are joined by joining the joined portions W by welding or the like, the plurality of divided members 3 may be joined by means other than welding.

For example, a plurality of dividing members 3 may be connected by using a connecting plate 20 such as a fixing portion between the rotating jig 12 and the dividing member 3 shown in FIG. 3, or such a connecting plate 20 may be used. The fixing means and the fixing means by welding as described above may be used in combination.

Further, in the rotation jig 12 according to the embodiment, the structure pillar 2 to which the rotation jig 12 is attached is provided with a wide portion 2c having a size that cannot be held by the holder 8 at the upper end portion thereof. However, even if such a wide portion 2c is formed not at the upper end portion of the structure pillar 2 but at the lower end portion or the upper and lower ends of the structure pillar 2, for example, the above-mentioned implementation is performed. By using the rotation jig 12 according to the above embodiment, the split member 3 having the wide portion 2c can be joined in a state of being laid sideways.

Further, in the rotation jig 12 according to the embodiment, the structural pillar 2 to which the rotation jig 12 is attached is held by the holder 8 because the width dimension of the wide portion 2c of the split member 3 is too large. However, the split member 3 is held by the holder 8 for other reasons, for example, the width dimension of the split member 3 is extremely small, or the side surface of the split member 3 is inclined. Even when it is not possible to make the split members 3 lie sideways, the rotating jig 12 according to the embodiment can be used to join the split members 3 sideways.

2 Structure Shinbashira 2a Web part 2b Flange part 2c Wide part 3 Split member 4 Diaphragm 6 Stud 8 Holder 8a Holding mechanism 10 Reversing machine 12 Rotating jig 12a Connection end face 14 Holding part 14a Web part 14b Flange part 16 Connecting part 16a Web part 16b Flange part 16c Bolt hole 18 Suspension part 18a End plate part 18b Side plate part 18c Suspension hole 20 Connecting plate W Joint part

Claims (7)

By holding each of the plurality of dividing members on the holder so that their central axes coincide with each other, and connecting the ends of the adjacent divided members while rotating the holder around the central axis. It is a jig for rotating the structural pillar used to form the structural pillar in a state where it is laid sideways.
It extends elongated in the direction of the central axis of the rotating jig, and the intermediate portion thereof can be held by the holding tool so that the central axis of the holding tool and the central axis of the rotating jig coincide with each other. With a holding unit configured to
One of the divided members in the length direction is integrally provided at one end of the holding portion in the length direction so that the central axis of the dividing member and the central axis of the rotating jig coincide with each other. A jig for rotating a structural pillar, which is characterized by having a connecting portion configured so that it can be fixed to an end portion. The holding portion is characterized in that the cross-sectional shape perpendicular to the length direction thereof is formed to be substantially the same as the cross-sectional shape perpendicular to the length direction of the structural pillar. The jig for rotating the structural true pillar according to 1. The jig for rotating a structural pillar according to claim 1 or 2, wherein the connecting portion is removable from one end in the length direction of the dividing member. The jig for rotating a structural pillar according to any one of claims 1 to 3, wherein a suspension portion is provided at the other end portion in the length direction of the holding portion. In a jig for rotating a structural pillar, which is provided between a holder having a rotating mechanism and the structural pillar and transmits the rotational force of the holder to the structural pillar.
A holder that is connected to the holder and is rotatable,
The structure is characterized in that it is provided with a connecting portion that extends outward from one end of the holding portion coaxially with the rotation center axis of the holding portion and is detachable from the structural pillar. Jig for rotating Shinbashira. Claim 5 is characterized in that, in a cross section perpendicular to the rotation center axis, the dimension from the rotation center axis to the outer edge of the holding portion and the dimension from the rotation center axis to the outer edge of the connecting portion are different. The rotating jig for the described structural pillar. A holding portion that is connected to a holding tool having a rotating mechanism and is rotatable, and a holding portion that extends outward from one end of the holding portion coaxially with the rotation center axis of the holding portion to form a Shinbashira. In the method of rotating a structural pillar using a rotating jig equipped with a detachable connecting part,
It is characterized in that the rotational force of the holder is transmitted to the structural pillar in a state where the holding portion, the connecting portion and the rotation center axis of the structural pillar are all aligned to rotate the structural pillar. How to rotate the structure Shinbashira.

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