JPH0587625B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for suspending a projecting suspension gantry installed on the outer wall surface of a steel structure and used as a workbench.

[Prior art] Projecting hanging gantry (abbreviated as gantry in this specification)
To hang it on the wall of a steel structure under construction,
It is necessary to support the base of the gantry on the beam of the building, and to suspend and support the other end by wire tied to the corner.

Regarding the gantry, there is no unified standard, and the structure of the components, the method of supporting the gantry base, and the method of fixing the hanging wires vary depending on the site and work site, and are completely inconsistent.

Conventionally, the commonly used method for fixing wires has been to use posts. To fix wires to posts, you can loop the ends of the wires and clip them, or you can attach fasteners to the ends. There was a way to attach it to the part.

[Problems to be Solved by the Invention] The method of using pillars to fix the wires for suspending the gantry has the following drawbacks. In other words, A. While it is essential that the suspension wires be connected to both ends of the gantry, the spacing between the columns of a steel frame structure varies from site to site, so if the spacing between the columns and the width of the gantry differ. , the wires have to be attached diagonally, which not only poses problems in terms of strength, but also significantly restricts work on the gantry. Therefore, in such cases, it is necessary to manufacture a unique gantry for each site, but the components are not interchangeable, which not only increases manufacturing costs, but also makes it impossible to relocate and use it at another work site. do not have.

B. Not only does it take time to attach and remove from the pillar, which reduces work efficiency, but also involves a lot of work outside the pillar, making relocation work dangerous.

C As mentioned above, the width of the gantry is limited by the span of the columns, and depending on the width of the gantry, it may not be possible to lift long objects.

Therefore, one of the joint applicants of the present application
As shown in Publication No. 50194, a gantry was proposed in which a beam H steel was used as a fixing point for the wire, instead of using a column which had many restrictions as described above.

The inventor of the present application studied the gantry shown in the above-mentioned publication and made improvements regarding the fixing of the gantry base and the fixing of the wire.

As is clear from the above, an object of the present invention is to clarify a method for suspending a gantry, which particularly allows relocation work to be carried out easily and safely.

[Structure of the Invention] A method for suspending a gantry according to the present invention is to place the steps provided at the stage base of the gantry on the edge of the floor, and in this state, the steps are placed at appropriate intervals on the edge of the stage. The flange of the beam H steel is maintained by selecting a mounting bracket and fixing it to a pillar etc. with a wire, and then using a fixed hook part and a movable hook part that are adjusted to the width of the beam by adjusting means. a wire fixing jig having a mechanism for attaching it to the movable hook portion, and a mechanism for preventing the jig from wobbling due to biting into the flange of the beam H steel by the tightening means acting in cooperation with the movable hook portion, and a stage of the gantry. The gantry is suspended from the H steel beam using wires fixed to both ends of the gantry via turnbuckles.

[Function] The base of the main body 10 of the gantry is placed at a free position at the edge of the floor, and its placed state is maintained by fixing it to a column etc. by the fixing means 20, and furthermore, the base part of the main body 10 of the gantry is placed at a free position at the end of the floor, and the placed state is maintained by fixing it to a column etc. by the fixing means 20. The beam A ( The biting of the wire fixing jig 40 itself into the flange prevents the wire fixing jig 40 from wobbling. The leveling of the gantry is also adjusted by turnbuckles connected to the gantry suspension wires.

In the method of the present invention, the base of the gantry and the wire are fixed as described above, so the gantry can be attached to any position on the wall of the building regardless of the position and spacing of the columns. is securely fixed to the beam without wobbling easily.

[Example] Hereinafter, a method for suspending a gantry according to the present invention will be described in detail with reference to the accompanying drawings.

In Figures 1 to 3, 10 is the main body of the gantry;
20 is means for fixing the base of the main body, 30 is a hanging device such as a wire, and 40 is a jig for fixing the wire.

The gantry is constructed by placing the end of the main body 10 on the end of the floor, fixing its base to a column etc. by means of fixing means 20, and then attaching a beam such as H-steel of a steel frame structure via hanging tools 30 and jigs 40. It is used by hanging and fixing it to A (H steel).

As shown in FIGS. 1 to 3, the main body 10 of the gantry has a stage 13 formed on a pair of beams 11 and 11 via a frame 12, and a protective fence 1 around the periphery.
5 is provided.

As shown in FIG. 3, step portions 14 are formed at both ends of the base of the stage 13, so that the main body 10 can be placed on the edge of the floor.Furthermore, as shown in FIG. A fixing means 20 is arranged at the end of the stage 13, and a wire 22 is used to fix the base of the main body to a pillar, etc. by selecting any one of the mounting fittings 21 arranged at appropriate intervals at the end of the stage 13. Fixed to.

The mounting bracket 21 should not protrude from the surface of the stage 13, or should be hidden by means such as folding or storage when not in use, and should be a mere opening so that the end of the wire 22 A hook should be placed and engaged so that it does not obstruct work on the stage.

Furthermore, the boundary between the stage 13 and the floor is covered by a gangplate 16 attached to the end of the main body 10 via a hinge mechanism, and the stage 13 is
Care has been taken to ensure that the floor and the floor are approximately on the same horizontal plane.

The frame of the protective fence 15 is removably fixed to the periphery of the stage 13 with bolts and nuts.

In the illustrated gantry, the stage 13 is constructed as a single unit over the entire length of the frame 12.
For example, it can be divided at the center and then combined and separated (folded) via a hinge mechanism or flange-like mechanism, etc.
It is preferable to make it possible to do this, and such a configuration is useful when transporting the product to another work site using a trailer or the like or storing it in a material storage area.

Next, the hanging tool 30 and the wire fixing jig 40
will be explained in detail.

The hanging tool 30 is a turnbuckle 31 whose one end is fixed to the end of the stage 13 as shown in FIG.
and a wire 32.

Although the turnbuckle 31 is used to finely adjust the horizontal level of the stage 13, other structures for horizontal adjustment in place of the turnbuckle 31 are not excluded.

As shown in FIGS. 4 and 5, the wire fixing jig 40 includes a fixed hook part 41 to which the end of the wire 32 is attached, and a movable hook part 43 attached to the leg part 42 of this fixed hook part 41. It is made up of.

To explain the attachment method or adjustment means for both, the leg portion 42 of the fixed hook portion 41 is provided with through holes 44 at regular intervals, while the movable hook portion 43 is provided with two through holes 45. Two of the through holes 44 of the leg part 42 are selected according to the width of the H steel used as the beam A, the movable hook part 43 is positioned, and both members are fixed with bolts and nuts. . 46 is a back-up material for reinforcing the area around the through hole 44 of the fixing hook portion 41; 47 is a tightening means for preventing the jig from wobbling;
As shown in the figure, it has the same structure as a vise. That is, a contact plate is placed at the upper end of the bolt that engages with the nut fixed to the fixed hook part 41, and when the bolt is rotated, it works together with the movable hook part 43 to grip the H steel flange and perform the repair. This prevents the tool 40 from falling off.

The wire fixing jig 40 is, for example, shown in FIGS.
The embodiment shown in FIG. 11 is also included.

That is, the one shown in FIG. 6 has the leg part 42 of the fixed hook part 41 configured in a U-shape, and the movable hook part 43 is located in the central space, and the one shown in FIGS. 7 and 8 is the opposite configuration.
What is shown in FIGS. 9 and 10 is the fixing hook part 4.
The movable hook part 43 is nested inside the leg part 42 of the base plate 1, and the one shown in FIG. In this case,
The movable hook part (41) may alternatively be a fixed hook part.

The shapes, coupling means, adjusting means, etc. of both hook portions are not limited to the above-mentioned configurations, and can be designed in various ways.

Next, the installation and relocation work of the gantry will be explained.

First, the main body 10 is transported to a work site and assembled on the ground, and then lifted by a crane along the wall of the structure and held at a predetermined floor position. In this state, the step part 14 of the stage 13 is engaged to be placed on the floor edge, and the fixing means 20
The base is fixed to a pillar or the like. Next, the hanging tool 30 and the jig 40 are used to suspend and fix the beam A made of H steel or the like. Once the work is complete, the crane and other equipment will release the suspension, and the installation of the hanging gantry will be completed.

In so-called gantry reassembly, the gantry is removed by a work procedure that is the reverse of the above. To move the installation to another floor, first suspend the gantry using a crane or the like, release the fixing means 20 at the base and the jig 40, move it to a predetermined position using the crane or the like, and then follow the steps above. Perform the installation work again. The subsequent rearrangement is also carried out in the same manner as described above.

In order to remove the gantry from the work site, it is unfixed using the above-mentioned removal procedure, lowered to the ground using a crane, etc., the protective fence 15, etc. are disassembled, and the gantry is loaded onto a trailer or the like and transported. In this case, as described above, if the stage 13 is made foldable or disassembleable, it will be possible to transport it using a small truck.

[Effects of the Invention] According to the method for suspending a gantry according to the present invention, the base of the gantry is placed on the edge of the floor, the placed state is maintained by fixing it to a column etc. by the fixing means, and the beam is suspended by the adjusting means. It is configured to be attached to a beam by a fixed hook part and a movable hook part adjusted to the width, and further includes a tightening member that comes into contact with the beam and cooperates with the movable hook part to prevent the jig itself from wobbling. Since the wires attached to both ends of the gantry via turnbuckles are fixed using a jig with means, it is possible to attach the wires to any position on the wall of the building, regardless of the columns. The wire can be securely fixed to the beam without easily wobbling, and the above-mentioned problem can be solved.

[Brief explanation of drawings]

Figure 1 is a plan view of the gantry, Figure 2 is a front view, Figure 3 is a side view, Figure 4 is a side view of the jig, Figure 5 is a bottom view, and Figures 6 to 11. is a perspective view showing another aspect of the jig. Each symbol in the figure indicates the following. 10...Main body of the gantry, 11...Beam, 12...
... Frame, 13 ... Stage, 14 ... Stage step, 15 ... Protective fence, 16 ... Gangplank, 2
0...Fixing means, 21...Mounting metal fittings, 22...
... Wire, 30 ... Hanging tool, 31 ... Turnbuckle, 32 ... Wire, 40 ... Wire fixing jig, 41 ... Fixing hook part, 42 ... Leg part, 4
3...Movable hook part, 44...Through hole, 45...Through hole, 46...Backup material, 47...Tightening means.

Claims (1)

[Claims] 1 Place the step provided at the stage base of the gantry on the edge of the floor, select the mounting brackets placed at appropriate intervals on the edge of the stage, and fix it to a pillar etc. with wire. maintain it by
Furthermore, a mechanism for attaching the beam to the flange of the beam H steel by means of a fixed hook part and a movable hook part adjusted to the width of the beam by an adjusting means, and a tightening means working in cooperation with the movable hook part. The gantry is attached to a beam using a wire fixing jig that has a mechanism that prevents the jig from wobbling by biting into the flange of the H steel, and wires that are fixed to both ends of the gantry stage via turnbuckles. A method for hanging a gantry, which is characterized by hanging it on H steel.