JP2548348Y2 - Jig for beam positioning - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention is used to attach the end of the beam to the bracket provided at the connection of the existing column in the construction work of the steel frame of the structure. The present invention relates to a preferable jig for positioning a beam.

"Conventional technology" In steel frame construction work for general structures,
In particular, when the girder is to be installed between the existing columns, the girder is positioned between the columns while performing positioning in three directions with respect to the turning direction of the girder, the span direction, and the direction orthogonal to the span (aligning the center line). It is necessary to hang it down and install it between pillars.

However, among the positioning operations in the above three directions, the work of turning the girder and aligning the direction is performed because the worker touches the girder by pushing or pulling the girder. Between the beams and columns,
There is a risk of being pushed by beams and falling from a work place at a high place.

As a way to avoid these operational risks,
The use of a turning device or a turning hook for positioning the girder in the turning direction is conceivable.

“Problems to be solved by the present invention” However, the above-mentioned swivel device requires a new device to be prepared at the site, and its cost is high and assembly cost is high. Remains. Further, since the turning hook has an error in the stopping accuracy of the girder, it is insufficient to determine the final orientation of the girder, and a problem remains in terms of reliability. Furthermore, both jigs only position the turning direction of the girder, and the remaining positioning operations in the span direction and the direction perpendicular thereto are still performed by the operator himself pushing or pulling the girder by hand ( The work still carries the risks described above.

This invention has been made in view of the above circumstances, and when a beam (especially a large beam) is suspended between existing columns and erected between the columns, a beam that can be easily positioned between the columns. It is intended to provide a positioning jig.

"Means for solving the problem" This invention is to position the beam between the columns when suspending the beam between the existing columns and joining the joint end of the beam to the joint bracket of each column. A beam-shaped main member that is suspended between the columns together with the beam by suspending means in a form in which the beam is disposed along the lower longitudinal direction of the beam, and both ends of the main member. And a guide portion for regulating the position of the beam by being externally fitted to both ends of the beam, and the guide portion has a tapered portion whose lower part spreads downward, The guide portion is inserted into the connection portion bracket from above when the main member is hung between the columns, and descends while being guided by the connection portion bracket. While straddling both beams, attach them to the beam and the joint bracket The beam is positioned so that the beam is positioned outside.

Preferably, the guide portion is configured to be slidable in the longitudinal direction of the main member in accordance with the span length of the beam, and the main member is configured to be able to adjust its own span length by a hinge mechanism. Is preferred.

According to the jig for positioning a beam according to the present invention, when the main member is hung between the columns together with the beam in a form where the beam is arranged along the lower longitudinal direction of the beam, both ends of the main member Is guided from above with respect to the connection portion bracket of each column, whereby the beam arranged along the lower longitudinal direction of the main member pivots itself on the main member and the guide portion. With the directional displacement regulated, the positioning between the columns is performed so as to match the center of the column.

"Example" Hereinafter, an example of the present invention will be described with reference to the drawings.

FIGS. 1 to 4 show an embodiment of the present invention. In this embodiment, a jig K for positioning a beam is connected to an automatic sling removal device S for suspending a steel beam 4. It is an example.

As shown in FIG. 1, a beam positioning jig K in this embodiment is configured such that a steel girder is attached to brackets 3, 3 attached to respective connections 2, 2 of existing columns 1, 1. 4 is a jig for positioning the girder 4 between the columns 1 and 1 when the joining ends 5 and 5 of the column 4 are joined.
A main member 10 having a span length substantially equal to or slightly shorter than the span length of the girders 4 to be installed between the main beams;
It mainly comprises a pair of guides 11, 11 which are slidably attached to both ends of the 10 in the span direction.

As shown in FIG. 2, the main member 10 has a predetermined distance from the center to the left and right from the center so that the jig can be applied to each of the girders 4 having several types of span lengths used for the frame of a building. At each position, both end portions can be bent upward, so that the main member 10 can be changed to two types of span lengths. Specifically, the main member 10 has a main body 12 having a predetermined span length extending equally from the center to the left and right,
A pair of bent portions 14, 14 hinged to both ends of the main body portion 12 via a hinge 13 so as to be vertically rotatable, and each bent portion 14, 14 is bent upward, and then a fixing stay is formed. 15, 15
It can be fixed at a predetermined angle via the.

Also, as shown in FIG. 3, the main members (the main body 12,
The bent portions 14, 14) 10 are a pair of side plate portions 16, 16 having a U-shaped cross section.
And a connecting member 17 connecting the both side plate portions 16 and 16 in parallel with each other at an interval larger than the flange width of the girder 4.
.. Are integrally formed.

Further, as shown in FIG. 2, the main member 10 is provided with two large beams at the lower ends on both side surfaces of the main body 12 to prevent the large beams 4 arranged along the lower longitudinal direction of the main member 10 from oscillating. 4 are provided on both sides of the support member 4 to extend downward. On the upper surface of the main body 12, connection frames 19, 19 for connecting the main member 10 to the automatic sling removal device S at two places are provided upright.

On the other hand, the guides 11, 11 regulate the relative displacement of the girder 4 in the turning direction with respect to the main member 10 at both ends of the main member 10, and connect the joining end of the girder 4 to the connection 2 of the columns 1, 1. The slides 20, 20, which are temporarily fixed to the side plates 16, 16 of the main member 10 from both sides by pins or the like, and the lower end of each slide 20, 20 Element
The lower portion 10 includes side portions 21 and 21 extending downward through both sides of the girder 4, and both side portions 21 and 21 easily pass through both sides of the bracket 3 of the connection portion 2. So that the guide portion 11 is easily guided to the bracket 3 by the side portions 21, 21.
Is provided at the lower end with a tapered portion 22 that bends outward on both sides.

In the guide portions 11, 11, the slide portion 20 is slidable in the longitudinal direction with respect to the side plate portion 16 of the main member 10, and the slide portion 20 is pinned by the side plate portion as described above.
16 can be temporarily fixed. The side portion 21 has a height dimension equal to or greater than the overall height of the girder 4, and the inner width of the side portions 21, 21 is set to be slightly larger than the flange width of the girder 4.

A specific method of using the beam positioning jig configured as described above will be described below together with its operation.

The jig K of the present invention is attached to the automatic sling removal device S by the connection frame 19 and the girder 4 is connected to the wire.
23, and the girders 4 are arranged along the lower longitudinal direction of the main member 10. Of the jig K, the length of the main member 10 is adjusted in accordance with the span length of the girder 4, and the guide portions 11, 11 are such that half of the entire width thereof is outside the joint end 5 of the girder 4. And fitted externally to the end of the girder 4.

By the lifting means, the girder 4 and the main member 10 are both lifted up through the automatic sling removal device S, and the girder 4 is moved between the target columns 1 and 1. During this time, the girder 4 has the guide portions 11 at both ends,
11 and is restrained below the main member 10 by the steady member 18,
The movement is regulated so as not to swing sideways.

When the girder 4 and the main member 10 are suspended between the columns 1 and 1, at this stage of suspension, as shown in FIG. 1, the respective tapered portions 22 of the guide portions 11 at both ends of the main member 10 are raised from above. Guides are passed through both sides of brackets 3 and 3 of each connection 2 and 2 of pillars 1 and 1, and then sides 21 and 21 of guides 11 and 11 pass through both sides of brackets 3 and 3. The guide portions 11, 11 are temporarily fixed to the brackets 3, 3 in an externally fitted state from above.
That is, the guide portion 11 is fitted to both ends of the girder 4 and the bracket 3 so as to straddle both of them.

As a result, the joining ends 5 and 5 of the girder 4 are positioned so as to match the joining end surfaces of the brackets 3 and 3 with the guides 11 and 11 at both ends of the main member 10 serving as guides.
It will be positioned to match the core between them. At this time, the guide portions 11 at both ends of the main member 10
Since the girder 4 is positioned first between the columns 1 and 1 afterward, the girder 4 is automatically positioned between the columns 1 and 1 so as to coincide with the center of the column, and the girder 4 is easily positioned. Will be positioned.

According to this embodiment, it is not necessary for an operator to push or pull the girder 4 for final positioning of the girder 4, so that safety of work at a high place can be ensured.

Further, since the main member 10 is composed of the main body 12 and a pair of bent portions 14 and 14 hinged to both ends of the main body 12 via hinges 13 so as to be vertically rotatable, It can be properly used according to each span length of the girder 4 and other beams. In addition, the guide portions 11 and 11 are slidably attached to the side plate portions 16 and 16 of the main member 10 from both sides by pins or the like so that the guide portions 11 and 11 can slide.
, Which extend downward from both sides of the girder 4 disposed below the main member 10 from the lower end of the girder 4, so that the girder 4 and other beams to be built on the site Can be properly used according to each span length. Thereby, the jig K of the present invention can be applied to several types of beams to be built on site.

In addition, according to the jig K of the present invention, since the tapered portions 22 that bend outward on both sides are provided at the lower ends of the side portions 21 and 21 of the guide portions 11 and 11, respectively, the guide portions 11 and 11 are bracketed. The guide can be easily guided to the third and third members, whereby the work for positioning the beam can be performed more smoothly and easily.

"Effects of the Invention" As described in detail above, the jig for positioning a beam according to the present invention is arranged between the columns together with the beams by the suspending means in such a manner that the beams are arranged along the lower longitudinal direction thereof. A beam-shaped main member to be suspended and located at both ends of the main member,
A guide portion guided from above with respect to the connection portion bracket at the stage of hanging the main member between the columns, and the beam is controlled in the turning direction by the main member and the guide portion, and Since it is positioned between them, the following effects are obtained.

a) The beam can be easily positioned between the columns to match the center of the column. Thus, the beam can be easily attached to the column. In addition, since it is not necessary for the operator to push the beam in the turning direction to perform the positioning, the safety of the operation can be improved.

b) It is possible to promote automation of beam positioning including other turning control devices and the like, thereby promoting labor saving.

c) Since the lower portion of the guide portion is a tapered portion that spreads downward, the descent is guided by the taper portion only by gradually lowering the guide portion from a position almost directly above the connection portion bracket,
Therefore, it is possible to easily and externally fit the guide portion to the connection portion bracket, and as a result, it is possible to position the beam naturally and accurately.

[Brief description of the drawings]

1 to 4 show an embodiment of the present invention. FIG. 1 is a working view showing a state in which a girder is positioned between columns using the present invention, and FIG. 2 is a beam positioning. FIG. 3 is a front view of the jig, FIG.
The figure is a view taken in the direction of arrows IV-IV in FIG. 1 ... pillar, 2 ... joint, 3 ... bracket (joint bracket), 4 ... girder (beam), 5 ... joint end, 10 ...
… Main member, 11… Guide part, 22 …… Taper part.

Claims (3)

(57) [Scope of request for utility model registration] 1. A jig for positioning a beam between said columns when suspending the beam between existing columns and joining a joint end of the beam to a connection portion bracket of each column. A beam-shaped main member that is suspended between the columns together with the beam by the suspension means in a form in which the beam is disposed along the lower longitudinal direction of the beam, and the beam-shaped main member is provided at both ends of the main member. A guide portion which is fitted to both ends of the beam to regulate the position of the beam, wherein the lower portion of the guide portion is a tapered portion extending downward, and the guide portion is formed by the main member. A state in which the cable is inserted into the connection portion bracket from above when it is hung down between the columns, descends while being guided by the connection portion bracket, and straddles both the connection portion bracket and the beam. At the beam and the fitting bracket are fitted outside Positioning jigs beams, characterized in that it is configured to position the. 2. A jig for positioning a beam according to claim 1, wherein said guide portion is slidable in a longitudinal direction of said main member in accordance with a span length of said beam. 3. The main member according to claim 1, wherein its own span length is adjustable by a hinge mechanism.
Or the jig for positioning a beam according to 2.