JPH0718244B2 - Method and apparatus for assembling steel material for erection - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention hangs a steel material for erection between a fixed pair of fixed plates, and then attaches the end portion of the steel material for erection and the fixed plate. The present invention relates to a method for assembling a steel material for erection that is connected by bolts and nuts, and an assembling apparatus for performing the method.

[Prior Art] Conventionally, a beam attachment device for elevating a beam as a erection steel material to a predetermined erection position has been proposed for the purpose of improving the operation efficiency of a lifting machine such as a crane. However, in such an apparatus, the final positioning work of the beams, the insertion of bolts for connecting the beams, and the tightening work of the nuts are currently performed manually by workers.

[Problems to be Solved by the Invention] Positioning work of a steel material by a worker is not safe because it is a work at a high place, and accurate positioning is difficult and workability is poor. Moreover, since accurate positioning cannot be performed, the bolts cannot be inserted smoothly, and there is a problem that it takes a long time to adjust the bolts.
A great deal of work was required by the four workers. Therefore, the automatic assembling of the steel material for installation including the insertion of the bolt could not be realized at all.

The present invention solves such a problem.

[Means for Solving the Problems] In the method for assembling a steel material for erection according to the first invention, the steel material for erection is suspended between a pair of fixed fixing plates,
In the method of assembling the steel material for erection in which the end portion of the steel material for erection and the fixed plate are connected by bolts and nuts, a pair of bolt insertion holes facing each other are opened in the connecting portion between the end portion of the steel material for erection and the fixed plate. First, suspend the steel material for erection between the fixing plates, then put the end of the steel material for erection in place and insert the positioning pin from one side of the pair of bolt insertion holes into the other side. The steel material for erection is positioned at the erection position between the fixing plates by means of, and then the bolt is inserted between the end portion of the steel material for erection and the fixing plate, and the nut is screwed onto the tip of the bolt. .

In the apparatus for assembling a steel material for erection according to the second aspect of the invention, the bolt insertion hole is formed at a fixed position at the end between the pair of fixing plates that are fixedly installed and the bolt insertion hole is formed at the fixed position. In a steel material assembling apparatus for erection, in which the steel material for erection is suspended and the end portion of the steel material for erection is connected to the fixing plate by bolts and nuts, the steel material for erection is installed detachably and A device main body that is suspended together with, a positioning means that is provided in the device main body and positions the steel material for erection in the horizontal and vertical directions, and an end portion of the steel material for erection and a fixing plate that is provided in the device body. A pin insertion means for inserting a positioning pin from one side of the bolt insertion hole to the other side; and a pin insertion means provided in the apparatus main body at a connection portion between an end portion of a steel material for erection and a fixing plate. Located on one side, and a bolt insertion means for passing a bolt from one side to the other side of those connecting portions, and the other side of the connecting portion of the end portion of the steel material for erection and the fixing plate, which is provided in the device body. And a nut screwing means for screwing a nut to the tip of the bolt, and a control means for controlling the positioning means, the pin inserting means, the bolt inserting means, and the nut screwing means. To do.

[Operation] According to the present invention, a pair of bolt insertion holes facing each other is opened in the connecting portion of the end portion of the erection steel material and the fixing plate,
After suspending the erection steel material between the fixing plates, place the end of the erection steel material in a fixed position, and insert the positioning pin from one side of the pair of bolt insertion holes to the other side to perform the erection. Position the steel material for use at the installation position between the fixing plates, then pass the bolt between the end of the installation steel material and the fixing plate, and screw it with the nut at the tip of the bolt, so that it is in a suspended state. The steel material for erection is easily and surely moved to a predetermined erection position and adjusted, and then the steel material for erection is assembled.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

1 to 6 show an embodiment of the present invention. First, the configuration of the apparatus of this embodiment will be described.

In the figure, reference numeral 1 is an H-shaped steel girder.
Is hung between the box pillars 2 of the high-rise building section, and is erected by bolts and nuts between the fixing plates 3 attached to the box pillars 2 at fixed positions. . The assembling apparatus of this embodiment is
It is configured as a device for constructing such a girder 1.

Reference numeral 4 denotes a main body of the assembling apparatus, which is detachably attached to each of the left and right ends of the girder 1 and can be suspended together with the girder 1. In the case of this example, the left and right device bodies 4 are connected to each other by a stretchable connecting member 5, and the distance between the left and right device bodies 4 can be adjusted by extending and contracting the intermediate portion of the connecting member 5. ing. The left and right device bodies 4 have a symmetrical structure. Therefore, hereinafter, the device body 4 on the left side in FIG.
The configuration of will be described.

Below the device body 4, a clamp mechanism 6 for fixing the device body 4 itself to an end portion on the girder 1 is provided. The clamp mechanism 6 has a pair of U-shaped grips 7 for holding the upper flange 1a of the girder 1 from the left and right in FIG.
These grips 7 are adapted to synchronously move toward and away from each other. The operation mechanism of the grip 7 is configured by a grip jack 9 that is expanded and contracted by a grip motor 8, and a pantograph mechanism (not shown) that synchronously moves the grip 7 toward and away by the expansion and contraction of the jack 9. A large-diameter screw 10 for fixing a flange is screwed onto the upper portion of the grip 7 from above (see FIG. 2).

On the other hand, a movable base 11 is provided on the upper part of the apparatus body 4 so as to be slidable in the left-right direction in FIG. 2, and the movable base 11 is slide-adjusted by a span adjustment screw jack 12. It is like this. The movable base 11 is provided with a column gripping arm 13 that is slidable in the left-right direction in FIG. 3, and the column gripping arm 13 is slidably adjusted by a column gripping screw jack 14. At the left end of the column gripping arm 13 in FIG. 3, a claw portion 13a that hooks on the column 2 is provided. A movable body 15 is slidably provided at the right end of the pillar gripping arm 13 in the figure along the longitudinal direction of the pillar gripping arm 13, that is, along the left-right direction in FIG. The movable body 15 is adapted to slide when the pillar width setting handle 16 is rotated. Further, on the upper part of the movable body 15, there is provided a positioning arm 17 which is slidable in the left-right direction in FIG. 2, and this arm 17 is slid by a positioning jack 18. A claw portion 17a extending downward is provided at the tip of the positioning arm 17, and an absorber S is provided on the left side portion in FIG. 3 thereof.

Further, a pair of bolt tightening mechanisms 19 and 20 are provided on the lower portion of the pair of grips 7 on the lower side of the apparatus main body 4 mentioned above. The bolt tightening mechanism 20 on the right side in FIG. 3 is attached to a fixed position under the grip 7 on the right side in FIG.
The bolt tightening mechanism 19 on the left side of the figure is slidably attached to the lower part of the grip 7 on the left side of the figure. The latter left bolt tightening mechanism 19 is slidable in the left-right direction in FIG. 2 and is slidably adjusted by a screw jack 21.

The structure of the left bolt tightening mechanism 19 is shown in FIGS.
Shown in the figure.

In the case of this example, the bolt tightening mechanism 19 has a structure in which five units A, B, C, D, and E are vertically combined, and the distance between adjacent units can be adjusted appropriately. There is. The uppermost and lowermost two units A and E are nut tightening boxes 22, the central unit C is a pin insertion box 23, and the upper and lower two units B and D are bolt insertion boxes 24, respectively.

The nut tightening box 22 has a nut holder 22a which is rotatable about an axis O1 in the left-right direction in FIG. 5, and the nut N is held at the tip of the nut holder 22a so as not to rotate. It has become. Nut holder 22a
Gear 22b is attached to the rear end of the
Is connected to a nut rotating motor 22f via a worm gear 22c and gears 22d and 22e. Further, in the bolt insertion box 24, a guide portion 24a for guiding slidably along the left-right direction in FIG.
The bolt B in the guide portion 24a is pushed rightward in FIG. 5 by the bolt pushing means 24b. Further, the pin insertion box 23 at the center is provided with a pin 23a slidable along the left-right direction in FIG. 5, and the pin 23a is used to expand and contract the ball screw jack 23c driven by the motor 23b. It is designed to push strongly to the right in Fig. 5.

As shown in FIG. 5, the relationship between the left bolt tightening mechanism 19 having such a configuration and the girder 1 is as shown in FIG.
The rotation axis O1 of the nut N and the axis of the bolt B are aligned with the center line of the bolt insertion hole 1c shown in FIG.

On the other hand, the right bolt tightening mechanism 20 is provided with a bolt insertion box 24 at a position facing the nut tightening box 22 of the left bolt tightening mechanism 19, and at a position facing the bolt insertion box 24 of the left bolt tightening mechanism 19. It is provided with a nut tightening mechanism 22. Therefore, the nut tightening box 22 and the bolt insertion box 24 of the left and right bolt tightening mechanisms 19 and 20 face each other with the bolt insertion hole 1c of the girder 1 interposed therebetween.

The assembling device configured as described above is a suspended load rotating device.
It is designed to be suspended by 25 auxiliary suspension wires W1 (see FIG. 1). This suspended load rotating device 25 is to be suspended by a crane (not shown),
Girder 1 with main suspension wire W2 together with assembling device
Can be suspended, and the suspended load can be appropriately swung to adjust the suspended state. In addition, this hanging load rotation device 25 has an automatic ball removing function, and a control device for controlling each operating part of the above-described assembly device.
Combined with 26.

Next, the operation of the assembling apparatus having the above-mentioned configuration and the assembling method of the present invention will be described.

First, as shown in FIG. 6 (a), a crane (not shown) lifts the assembling device 4 together with the suspended load rotating device 25, places the assembling device on a stable place such as on the ground, and adjusts the connecting member 5 for expansion and contraction. Then, the distance between the left and right device bodies 4 is adjusted. The degree of adjustment is adjusted to the span of the pillar 2.

Next, the assembling apparatus is lifted and moved to the place where the girder 1 is placed. Then, the assembly device is placed on the upper part of the girder 1,
The device bodies 4 of the assembling device are positioned at both ends of the upper part of the girder 1 (FIG. 6 (b)). Then, the control device 26 operates the gripping motors 8 of the clamp mechanisms 6 of the left and right device main bodies 4 to bring the pair of grips 7 closer synchronously, and sandwich the upper flange 1a of the girder 1 therebetween. . Then, the large-diameter screw 10 for fixing the flange is tightened to fix the left and right device bodies 4 on the girder 1.

Subsequently, the pillar width setting handle 16 (see FIG. 3) is turned to slide the movable body 15, and the distance between the movable body 15 and the claw portion 13a of the pillar gripping arm 13 is set to be slightly larger than the width of the pillar 2. Adjust to a wide width. Further, the nut N is set in the nut tightening box 22 of the bolt tightening mechanisms 19 and 20, and the bolt B is set in the bolt inserting box 24. By the way, each box 2 in the bolt tightening mechanism 19, 20
The distance between 2,23,24 is adjusted in advance, and the set nut N, bolt B, and pin 23a are in the web 1b of the girder 1.
It is designed to face the bolt insertion hole opened in the above. Further, the vertical intervals between these bolt tightening mechanisms 19 and 20 and the positioning arm 17 are set in advance as follows. That is, the support plate 27 is previously attached to the pillar 2.
When the positioning arm 17 is placed on the receiving plate 27, the nut N, the bolt B, and the pin 23a set in the bolt tightening mechanisms 19 and 20 are exposed to the fixing plate 3 of the column 2. The bolt insertion holes are also set to face each other in the height direction.

After that, as shown in FIG. 6 (c), the main suspension wire W2 lowered from the suspended load rotating device 25 is connected to the girder 1. Then, with the assembly device 4 mounted on the girder 1, the girder 1
Is lifted and moved up to between the columns 2 that have already been erected (FIGS. 6 (d) and (e)). FIG. 6 (d) is a plan view and FIG. 6 (e) is a side view. The moving position of the girder 1 is first the front position between the columns 2 (the lower position in FIG. e) The right position). Before moving to this front position, one bolt tightening mechanism 19 is previously slid by the screw jack 21 to the position shown by the chain double-dashed line in FIG.

In this way, after moving to the front position of the pillar 2, the crane is laterally moved to press the left and right device bodies 4 against the front surfaces of the left and right pillars 2. At that time, the absorber S at the tip of the positioning arm 17 is gradually compressed (FIG. 6 (f)). Then, after the absorber S is sufficiently compressed, the girder 1 is lowered, and the positioning arm 17 of the apparatus body 4 is lightly placed on the receiving plate 27 of the column 2 (FIG. 6 (g)). Thereby, the girder 1 is positioned in the vertical direction. Further, when the girder 1 descends, the tip of the absorber S slides while being pressed against the column 2 to guide the girder 1 descending.

After that, the pillar gripping arms 13 of the left and right device bodies 4 are slid outward by the screw jacks 12, and the pillar gripping arms 13 are applied to the side surfaces of the pillar 2 (FIG. 6 (h)). Up to this point, the pillar gripping arms of the left and right device bodies 4
13 is located slightly inward between the pillars 2 so as not to disturb the lateral movement of the girder 1. Further, for the same reason, one bolt tightening mechanism 19 in the left and right device bodies 4 is in the state of the chain double-dashed line in FIG. 2 as described above so as not to hit the fixing plate 3 of the column 2. Has become.

After that, the positioning arms 17 in the left and right device bodies 4
Slide in the direction of bringing them closer to each other. The sliding positioning arm 17 hooks the claw portion 17a at its tip on the receiving plate 27 of the column 2 to pull the column 2 (FIG. 6 (i)). Then, the gap between the pillar gripping arm 13 and the pillar 2 is eliminated. As a result, the girder 1 is the sixth
Positioning is performed in the left-right direction in FIG.

Then, the column gripping arm 13 is slid downward in FIG. 6 (j), that is, rightward in FIG. The slidable pillar gripping arm 13 grips the pillar 2 between the claw portion 13a at its tip and the positioning arm 17.
As a result, the girder 1 is positioned with respect to the vertical direction in FIG. 6 (j).

Through the series of operations described above, the girder 1 is positioned at the erected position between the columns 2. Then, in this positioning state, the fixing plate 3 of the pillar 2 and the bolt insertion holes formed in the web 1b of the girder 1 are aligned with each other.

After that, the pair of bolt tightening mechanisms 19 and 20 are operated to connect the fixing plate 3 of the pillar 2 and the web 1b of the girder 1 with the bolt B and the nut N.

That is, first, one bolt tightening mechanism 19 is slid from the position shown by the two-dot chain line in FIG. 2 to the position shown by the solid line in FIG. This allows the twin bolt tightening mechanism
19, 20 face each other with the fixed plate 3 of the pillar 2 and the web 1b of the girder 1 interposed therebetween. Then, the pin 23a of the pin insertion box 23 of the one bolt tightening mechanism 19 is pushed out to the right in FIG. The pin 23a passes through the bolt insertion hole on the side of the fixed plate 3 of the pillar 2 to
Is forcibly pushed into the bolt insertion hole on the web 1b side. As a result, the positional relationship between the pillar 2 and the girder 1 is finely adjusted, and the bolt insertion holes of both of them and the bolt tightening mechanism are adjusted.
The positional relationship with 19, 20 is extremely accurately determined.

After that, the bolt B is pushed out from the bolt insertion box 24 in the bolt tightening mechanism 19 and 20, and the bolt B is pushed out.
Through the fixing plate 3 of the pillar 2 and the bolt insertion hole of the web 1b of the girder 1. Then, the bolt tightening mechanism 19,2
The nut tightening box 22 at 0 rotates the nut N. By this rotation, the nut N is screwed onto the tip of the bolt B that has penetrated through the bolt insertion hole, and is tightened. The tightening force is such that it is temporarily fixed.

After connecting the girder 1 with the bolts B and the nuts N in this manner, the bolt tightening mechanisms 19 and 20 are returned to their original states, leaving only the bolts B and the nuts N. then,
The respective operating parts of the left and right device bodies 4 are operated in the opposite manner to the case described above, and the positioning relationship between them and the pillar 2 is solved. Further, the clamps 6 of the left and right device bodies 4 are used to unclamp the girder 1 and the connection of the girder 1 with the main suspension wire W2 is automatically released. After that, lift only the assembly device with a crane and remove it.

As described above, the girder 1 is installed between the fixing plates 3 of the columns 2. The nut N and the bolt B are then fully tightened.

Next, another embodiment of the present invention will be described with reference to FIGS. 7 and 8. The same parts as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted.

In the case of this embodiment, the pillar gripping screw jack 14 causes the pillar gripping arm 13 to slide largely in the left-right direction in FIG. 8, and when the pillar gripping arm 13 slides largely in one direction, As shown by the chain double-dashed line in FIG. 8, the device body 4 is largely biased to the right with respect to the column gripping arm 13. The movable base 11 is strongly pushed to the left in FIG. 7 by the screw jack 12 having a relatively large output. Further, the tip of the column gripping arm 13 is not provided with the claw portion 13a similar to that in the above-described embodiment. Further, instead of the large diameter screw 10 for fixing the flange in the above-mentioned embodiment, another flange fixing means is adopted. The fixing means is configured to rotate the eccentric gear-shaped rotating body 30 by the lever 31 so that the tooth portion of the rotating body 30 is pressed against the upper surface of the flange 1a of the girder 1 to be fixed. Other configurations are the same as those in the above-described embodiment.

In the case of the assembling apparatus of this embodiment, the girder 1 can be automatically installed even when the girder 1 is not housed between the columns 2. That is, when the girder 1 does not fit between the pillars due to the pillar 2 falling down, first, the pillar gripping arm 13 is inserted between the pillars, and the pillar 2 is pushed outward by the screw jack 12 to a predetermined size. Then, the pillar gripping arm 13 is laterally fed together with the girder 1 until the girder 1 hits the fixed plate 3. After that, the pillar 2 is pulled by using the claw portion 17a attached to the height direction positioning arm 17, and the excessive opening of the pillar 2 is adjusted. As a result, the girder 1 is positioned at the installation position between the columns 2. After that, the same work as in the above-described embodiment is performed.

As described above, in the case of the present embodiment, after the space between the columns 2 is forcibly set to a predetermined span, the girder 1 is laterally fed and positioned at a predetermined erection position.

Next, another embodiment of each mechanism portion of the device according to the present invention will be described.

9 and 10 show another configuration example in which the means for pushing out the pin 23a in the pin insertion box 23 of the bolt tightening mechanism 19 is different. The former push-out means uses a traveling nut type screw jack 40 to secure the pin 23a.
Is pushed out. On the other hand, the latter pushing means is a combination of the expandable link 41 and the cylinder 42. When the cylinder 42 extends, the link 41 extends and the pin 23a is pulled out obliquely as shown by the chain double-dashed line in the figure, and when the cylinder 42 retracts, it is shown by the solid line in the figure. Link 41 shrinks to pin 23
It is designed to be pushed out while raising a.

FIG. 11 shows another configuration example of the flange fixing means.

In the fixing means of this example, the upper surface of the lower part of the U-shaped grip 7 is used as an inclined surface, and when the thickness of the flange 1a of the girder 1 is small, it is sandwiched inside the grip 7 and the one flange 1a When the wall thickness is large, it is sandwiched in front of the grip 7.

In each of the above embodiments, the vertical interval between the bolt tightening mechanism 19, 20 and the height direction positioning arm 17 is set to a predetermined dimension. In addition, by incorporating a telescopic mechanism at the rising portion of the positioning arm 17, it is possible to automatically adjust the interval.

Further, the configuration of each part of the device according to the present invention is not specified only in the above-described embodiment, for example, the connecting member 5 for connecting the left and right device bodies 4 is not always necessary, and the left and right device bodies 4 are not necessarily required.
May be separate types separated from each other.
Further, the suspended load rotating device 25 does not necessarily have to be used.
As the drive mechanism of each operating unit, various ones such as a worm motor, a flexible shaft, and an air motor can be used. In particular, the use of the flexible shaft for transmitting the rotational force for turning and tightening the nut N makes it possible to use the bolt tightening mechanism 19, 20.
This is extremely effective in simplifying the configuration of.
A spring, a memory alloy spring, or the like can be used as the pushing means of the bolt B. Also pin
A relatively powerful hydraulic jack, electric jack, pneumatic jack, or the like can be used for pushing out 23a.

Further, the steel material to be erected by the present invention is not limited to only the large beam, and for example, steel material in the shipbuilding industry may be erected. Therefore, the field of application of the present invention is extremely wide.

[Effects of the Invention] As described above, according to the present invention, a pair of bolt insertion holes facing each other are previously formed in the connecting portion of the end portion of the erection steel material and the fixing plate, and the erection steel material is attached to the fixing plate. After suspending in between, place the end of the steel material for erection in a fixed position, and insert the positioning pin from one side of the pair of bolt insertion holes to the other side, so that the steel material for erection is fixed between the fixing plates. Positioning at the erection position, then insert the bolt between the end of the erection steel material and the fixing plate, and screw the nut to the tip of the bolt to assemble the erection steel material. By inserting it, it is possible to easily and reliably move and adjust the suspended steel material to the predetermined installation position, and as a result, the subsequent bolt and nut tightening work can be performed. Full automation can be realized. In addition, unsafe work in high places work can be eliminated, and a fall disaster can be prevented.

[Brief description of drawings]

1 to 6 are views for explaining one embodiment of the present invention. FIG. 1 is a perspective view of an assembling apparatus, FIG. 2 is a side view of the assembling apparatus, and FIG. 3 is FIG. III-III line arrow view of FIG. 4, FIG. 4 is a longitudinal sectional view of the bolt tightening mechanism, FIG. 5 is a sectional view taken along the line VV of FIG. 4, and FIGS.
FIG. 6 is a diagram for explaining a procedure of an assembling method. 7 and 8 are views for explaining another embodiment of the present invention. FIG. 7 is a side view of the assembling apparatus, and FIG.
The figure is a view taken along the line VIII-VIII in FIG. 9 and 10 are explanatory views of a different configuration example of the positioning mechanism in the assembly device of the present invention, and FIG. 11 is an explanatory diagram of another configuration example of the clamp mechanism in the assembly device of the present invention. 1 ... Large beam, 2 ... Column, 3 ... Fixing plate, 4 ... Device body, 6 ... Clamp mechanism, 7 ... Grip, 13 ...
Column gripping arm, 17 …… Positioning arm, 19,20 …… Bolt tightening mechanism, 22 …… Nut tightening box, 23
...... Pin insertion box, 23a ...... Pin, 24 ...... Bolt insertion box, 26 ...... Control device, B ...... Bolt, N ...... Nut.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yoshihiro Takahama 2-16-1 Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Kazunori Koshida 2-16-1 Kyobashi, Chuo-ku, Tokyo Shimizu Incorporated (72) Inventor Shinobu Yamazaki 2-16-1 Kyobashi, Chuo-ku, Tokyo Shimizu Incorporated (72) Inventor Junichiro Maeda 2-16-1 Kyobashi, Chuo-ku, Tokyo Constructed Shimizu Incorporated (72) Inventor Tetsuji Yoshida 2-16-1 Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Yuji Hirabayashi 2-16-1 Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. Within

Claims (2)

[Claims] 1. A method of assembling a steel material for erection, in which a steel material for erection is suspended between a pair of fixed fixed plates, and an end portion of the steel material for erection and the fixing plate are connected by bolts and nuts. , Make a pair of bolt insertion holes facing each other at the connection part between the end of the steel for construction and the fixing plate, suspend the steel for installation between the fixing plates, and then fix the end of the steel for installation. Position the steel material for erection at the erection position between the fixing plates by inserting the positioning pin from one side of the pair of bolt insertion holes to the other side, and then, the end portion of the erection steel material. A method of assembling steel material for installation, characterized in that a bolt is inserted between the fixing plate and the fixing plate, and a nut is screwed onto the tip of the bolt. 2. A steel material for erection, in which a bolt insertion hole is opened at a fixed position at an end portion, is suspended between a pair of fixed plates which are fixed and have a bolt insertion hole formed at a fixed position, In a device for assembling a steel material for erection in which an end portion of the steel material for erection and a fixing plate are connected by bolts and nuts, a device main body that is detachably equipped at the end portion of the steel material for erection and is suspended together with the steel material for erection, Positioning means provided in the apparatus main body for performing horizontal and vertical positioning of the steel material for erection, and provided in the apparatus main body from an end of the steel material for erection and one side of the bolt insertion hole in the fixing plate. Pin insertion means for inserting a positioning pin to the other side, and the device main body, which is provided on the one side of the connecting portion between the end portion of the steel material for installation and the fixing plate, and the connecting portion thereof. Bolt insertion means for passing a bolt from one side to the other side in the device main body, and is located on the other side of the connecting portion between the end of the steel material for erection and the fixed plate, which is provided in the apparatus main body, and a nut is screwed on the tip of the bolt. An apparatus for assembling a steel material for erection, comprising: a nut screwing means for fitting; a positioning means; a pin inserting means; a bolt inserting means; and a control means for controlling the nut screwing means.