JP6843385B2 - Jig for main rope support - Google Patents

Description

The present invention relates to a jig for a master rope strut, and more particularly to a jig for a master rope strut for attaching a master rope strut for supporting the master rope to a shaped steel.

Conventionally, when the main rope support is installed on a beam of shaped steel having a narrow flange width, the following is performed. That is, as shown in FIG. 4 (A), a thick plate plate 102 capable of inserting the mounting bolt 110a of the main rope support 110 all the way into the flange 101a of the beam 101 having a narrow flange width is fixed by the fastening metal fitting 103, and the flange. The narrow beam 101 and the thick plate 102 were integrated to install the main rope support 110. 4 (B) is an arrow view of the portion indicated by the arrow IVB-IVB in FIG. 4 (A), and FIG. 4 (A) is the portion indicated by the arrow IVA-IVA in FIG. 4 (B). It is a side view.

110b in FIG. 4B shows a dish-shaped holding portion at the tip of the mounting bolt 110a in FIG. 4A.

Further, FIG. 5 is a side view corresponding to FIG. 4A showing another method. Here, the main rope support 110 receives an impact load when the operator crashes from the beam 104 having a narrow flange width. At this time, the beam 104 having a narrow flange width and the main rope support 110 are not separated by pulling with the tension metal fitting 105 from the direction opposite to the installation side of the main rope support 110 so that the main rope support 110 does not separate in the horizontal direction. Safety measures were taken so that it would be fixed. The main rope support is disclosed in, for example, Japanese Patent Application Laid-Open No. 8-270207.

Japanese Unexamined Patent Publication No. 8-270207 (summary, etc.)

When the main rope support is installed on the conventional beam of shaped steel with a narrow flange width, it has been performed as described above. However, the conventional method has a problem that it takes time and effort to fix the thick plate with the fastening metal fittings and to install the metal fittings that pull in the opposite direction.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a master rope strut mounting jig that does not require much effort to install a master rope strut on a beam of shaped steel having a narrow flange width. And.

The jig for fixing the main rope support according to the present invention is a jig for fixing the main rope support, and is a rectangular plate extending in the first direction and a first of the rectangular plates. Includes a U-shaped bend at the end in the direction of

Preferably, it further includes an upper protrusion that is provided at the end of the rectangular plate in the opposite direction of the first direction and extends upward.

More preferably, it includes a lower protrusion provided at the end of the rectangular plate in the direction opposite to the first direction.

The height of the lower protrusion is preferably thinner than the flange thickness of the H-shaped steel material used for the beam to which the jig is attached, and further equal to the flange thickness of the H-shaped steel material used for the beam to which the jig is attached. preferable.

It may include a pair of lateral protrusions provided at both ends in a direction orthogonal to the first direction of the rectangular plate and extending upward.

The jig for the main rope strut according to the present invention has a U-shaped bent portion that is bent in the opposite direction in a U-shape with an interval in the vertical direction at one end of the rectangular plate. With the bent portion engaged with the narrow flange portion, the fixture of the main rope support can be positioned and fixed.

As a result, it is possible to provide a master rope strut mounting jig that does not require much effort to install the master rope strut on a beam of shaped steel having a narrow flange width.

It is a figure which shows the jig for the master rope strut which concerns on one Embodiment of this invention. It is a figure which shows the attachment state to the shaped steel of the jig for a main rope support which concerns on one Embodiment of this invention. It is a figure which shows the attachment state to the shaped steel of the jig for a main rope support which concerns on other embodiment of this invention. It is a figure which shows the conventional mounting method which mounts a jig for a main rope support to a shaped steel. It is a figure which shows the other mounting method which mounts the jig for a main rope support to a shaped steel.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a jig 10 for a main rope strut according to an embodiment of the present invention, FIG. 1 (A) is a plan view, and FIG. 1 (B) is an arrow IB-IB in FIG. 1 (A). 1 (C) is a side view shown by an arrow IC-IC in FIG. 1 (B), and FIG. 1 (D) is a side view and a view shown by an arrow ID-ID in FIG. 1 (B). 1 (E) is a bottom view shown by arrows IE-IE in FIG. 1 (B).

With reference to FIGS. 1 (A) to 1 (E), the master rope support jig 10 has a rectangular plate 11 extending in the right direction (first direction) and a rectangular plate 11 in FIG. 1 (A). A U-shaped bent portion 12 that is bent downward at the left end of the plate 11 and an upper protrusion 13 that is provided at the right end of the rectangular plate 11 and extends upward are provided. Including. The lower protrusion 15 provided in the opposite direction may also be provided on the back surface of the upper protrusion 13. The height of the lower protrusion is preferably thinner than the flange thickness of the H-shaped steel material used for the beam to which the master rope strut jig 10 is applied, and is the same as the flange thickness of the H-shaped steel material used for the beam. Equivalence is optimal.

This point will be described later.

Further, the upper protrusion 13 provided at the right end of the rectangular plate 11 and extending upward can position and fix the attachment of the main rope support without the upper protrusion 13. Further, only the lower protrusion 15 may be provided and the upper protrusion 13 may not be provided.

Further, a pair of lateral protrusions 14a and 14b extending upward may be included at both ends of the rectangular plate 11 in a direction orthogonal to the left-right direction.

Next, a method of using the jig 10 for the main rope support will be described. FIG. 2 is a diagram showing how to use the main rope support jig 10. 2 (A) to 2 (B) show a state in which the main rope support jig 10 is attached to the flange of the H-shaped steel material used for the beam to which the main rope support jig 10 is applied, and FIG. 2 (C) shows the main rope support jig 10 attached to the flange. It is a figure which shows the state which the master rope support is attached after being attached to the flange of the H-shaped steel material, and FIG. 2 (D) is the arrow view (plan view) of the part indicated by arrow IID-IID in FIG. 2 (C). Is. 2 (A) to 2 (C) are views taken from the cross-sectional direction of the H-shaped steel material.

With reference to FIGS. 2A to 2D, when the jig 10 for the main rope support is attached to the flange 31 of the H-shaped steel material 30, the position of the end portion of the lower protrusion 15 on the bent portion 12 side is the flange. The positional relationship between the bent portion 12 and the lower protrusion 15 is such that the bent portion 12 and the lower protrusion 15 are substantially in contact with the 31 so that the master rope strut jig 10 can be positioned on the flange 31 of the H-shaped steel material. It is preferable that it is defined.

Further, referring to FIGS. 2C and 2D, the flange 31 of the H-shaped steel material 30 is sandwiched from above and below by the fittings 41a and 41b having the tightening screw portions attached to the ends of the main rope support 40. Therefore, as described above, the height of the lower protrusion 15 is preferably thinner than the thickness of the flange 31 of the H-shaped steel material used for the beam, and is optimally equal to the flange thickness. Since the details of the main rope support 40 and the attachments 41a and 41b attached to the ends thereof are known, detailed description thereof will be omitted here.

Here, when the height of the lower protrusion 15 is thinner than the thickness of the flange 31 of the H-shaped steel material 30 used for the beam, the screw axes 42a and 42b of the fixtures 41a and 41b are made of the H-shaped steel material. It is preferably on the flange 31. This is because when the flange 31 is located outside the flange 31, the center position where the tightening force of the fixtures 41a and 41b is applied is outside the flange 31, and the bending force is applied to the main rope support jig 10. is there.

Next, other embodiments of the present invention will be described. FIG. 3 is a diagram corresponding to FIG. 2C showing another embodiment of the present invention. With reference to FIG. 3, in this embodiment, the main rope strut jig 20 does not have the lower protrusion 15 in the previous embodiment. Since the other configurations are the same as those in the previous embodiment, the description thereof will be omitted.

In this embodiment, the screw axes 42a and 42b of the fittings 41a and 41b are on the web side of the H-shaped steel material 30 from the flange end 31a on the side where the main rope support 40 of the H-shaped steel material 30 is attached. Is preferable. The reason for this is the same as the above-mentioned case where the height of the lower protrusion 15 is thinner than the thickness of the flange 31 of the H-shaped steel material 30 used for the beam.

Although embodiments of the present invention have been described with reference to the drawings, the present invention is not limited to the illustrated embodiments. Within the same scope as the present invention, or within the equivalent scope, various modifications can be made to the illustrated embodiments.

According to the present invention, since it does not take time and effort to install the main rope support on a beam of shaped steel having a narrow flange width, it is advantageously used as a main rope support mounting jig.

10, 20 Jig for main rope support, 11 plates, 12 bent parts, 13 upper protrusions, 14a, 14b lateral protrusions, 15 lower protrusions, 30 H-shaped steel materials, 31 flanges 31.

Claims (4)

It is a jig for fixing the main rope support,
A rectangular plate extending in the first direction,
The rectangular plate includes a bent portion that is bent in a U shape at an end portion in the first direction with a vertical interval.
Further including an upper protrusion provided at the end of the rectangular plate in the opposite direction of the first direction and extending upward.
A jig whose length from the first direction end to the end in the opposite direction of the rectangular plate is longer than the width of the flange of the shaped steel to which the jig is attached . The jig according to claim 1, further comprising a lower protrusion provided at an end portion of the rectangular plate in a direction opposite to the first direction. The jig according to claim 2 , wherein the height of the lower protrusion is thinner than the flange thickness of the H-shaped steel material used for the beam to which the jig is attached. The jig according to any one of claims 1 to 3 , which is provided at both ends of the rectangular plate in a direction orthogonal to the first direction and includes a pair of lateral protrusions extending upward.

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