JP2003120617A - Hanging bolt supporting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To safely and surely support a hanging bolt in the vertical direction in a downward L-steel. SOLUTION: After a shank part 34a of a bolt is passed through a bolt insertion hole 33a in a second strip part 33 in an L-steel mounting apparatus 30, a connection apparatus 50 is turned around a hole 51a in the connection apparatus while the tip of a bolt 34 is abutted to a screw hole 31a in a first strip part 31. In this way, rotation is applied to a polygonal head part 34b in the bolt 34 to turn the bolt 34, and the bolt 34 is screwed to the screw hole 31a. When the connection apparatus 50 is turned further, a plate part 51 in the connection apparatus 50 is fastened between the second strip part 33 and the bolt head part 34b, and consequently, the hanging bolt 11 is suspended and supported in the L-steel 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension bolt supporting device for suspending and supporting a suspension bolt on L-shaped steel facing downward.

[0002]

2. Description of the Related Art In buildings, factories, station buildings, and other structures, for example, the upper ends of suspension bolts are fixed to a horizontally installed horizontal member, and the suspension bolts suspend and support a ladder-shaped cable rack, for example. Is being done.

However, in order to attach the upper end of this suspension bolt to a horizontal member, for example, L-shaped steel, conventionally, the suspension bolt fixing metal fitting 1 shown in FIG. 9 has been used.

That is, the hanging bolt fixing fitting 1 is composed of an upper fitting 2 having a U-shaped opening 3 and a lower fitting 6 rotatably connected to a lower end of the upper fitting 2.
Insert the lateral plate member 10a of the L-shaped steel 10 into the U-shaped opening 3 of the upper metal fitting 2 and tighten the bolt 4
By tightening, the lateral flat plate portion 10a of the L-shaped steel 10 is strongly sandwiched between the receiving piece 5 of the upper fitting 2 and the tip of the tightening bolt 4. The upper end of the hanging bolt 11 is fixed to the lower end of the lower metal fitting 6.

[0005]

However, there is a case where the L-shaped steel for supporting the suspension bolt in the building faces downward rather than upward.

That is, for example, in a factory or a station building, as shown in FIG.
As shown in 0 and 11, a plurality of L-shaped steels 10 may be installed horizontally with facing downwards, and a corrugated roof material 12 may be placed and fixed on a horizontal flat plate portion 10b of the L-shaped steels. . In such a case, as shown in FIG.
Since c is fixed in the U-shaped opening of the upper fitting, the upper fitting 2 may be detached downward from the flat plate portion 10c when a strong downward force is applied to the hanging bolt.

It is an object of the present invention to provide a suspension bolt supporting device capable of safely and reliably supporting the suspension bolt on the downward L-shaped steel.

[0008]

In order to achieve the above-mentioned object, a suspension bolt supporting device of the present invention comprises a first strip plate portion having a screw hole at its tip and the other end of the first strip plate portion. A folded strip plate portion that is folded back in an acute angle from, and extending from the tip of the folded strip plate portion in a direction substantially parallel to the first strip plate portion,
An L-shaped steel fixture having a second strip plate portion having a bolt insertion hole facing the screw hole, a hanging bolt support lower bracket for fixing the upper end portion of the hanging bolt at a desired inclination, and a bolt A plate part having a hole through which only the shaft part can be inserted, and a pair of plate parts that are folded back from both ends of the plate part with an interval that regulates the rotation of the polygonal head of the bolt and that mounts the hanging bolt support lower bracket. A connecting member having a mounting portion, the shaft portion of the bolt is inserted into a hole of the plate portion so as to project outward from the plate portion of the connecting member, and the L-shaped member is installed laterally with the L-face facing downward. On the outer surface of the upper first flat plate portion of the shaped steel, the L
The first strip plate portion of the fixture for shaped steel contacts, and the folded strip plate portion contacts the tip of the first flat plate portion of the L-shaped steel to the tip of the second flat plate portion. The shaft portion is inserted into the bolt insertion hole of the second strip plate portion of the L-shaped steel fixture, and the tip of the bolt is applied to the screw hole of the first strip plate portion to attach the connector. By rotating around the hole of the connector, it acts on the polygonal head of the bolt to rotate the bolt and screw the bolt into the screw hole of the first strip plate, and By rotating the connector, the plate portion of the connector is clamped between the second strip plate portion and the bolt head, and the suspension bolt is suspended and supported by the L-shaped steel. .

Further, the suspension bolt supporting device of the present invention comprises a first rod-shaped portion having a threaded surface at the tip, a folded rod-shaped portion bent from the other end of the first rod-shaped portion in an acute angle direction, and Desirable is an L-shaped steel fixture including a second rod-shaped portion having a threaded surface and extending from the tip of the folded rod-shaped portion in a direction substantially parallel to the first rod-shaped portion, and an upper end portion of the hanging bolt. A hanging bolt support lower metal fitting that is fixed at an inclination of, a plate-shaped portion having first and second holes through which tips of the first and second rod-shaped portions of the L-shaped steel fixture can be inserted, A first flat plate on the upper side of the L-shaped steel, which is provided in the lower part of the plate-shaped part and has a connecting part having a mounting part for mounting the hanging bolt support lower metal part, and is installed laterally with the L-shaped face facing downward. The first rod-shaped portion of the fixture for L-shaped steel contacts the outer surface of the portion, and the folded rod-shaped portion is L-shaped. From the tip of the first flat plate portion of the steel second
The first and second plate-shaped parts so as to project outward from the plate-shaped part of the connector so as to come into contact with the tip of the flat-plate part.
Insert the tips of the first and second rod-shaped parts into the holes of the first and second
A nut is screwed on the threaded surface of the rod-shaped portion and is tightened to the plate-shaped portion of the connecting tool so that the suspension bolt is supported by suspending the L-shaped steel.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show an embodiment of a suspension bolt support device 20 of the present invention. The hanging bolt support device 20 includes an L-shaped steel fitting 30 that is attached to a downward L-shaped steel, a hanging bolt support lower metal fitting 40, and a connecting tool 50.

The L-shaped steel fitting 30 has a screw hole 3 at the tip.
1st strip | belt board part 31 which has 1a, and this 1st strip | belt board part 3
Folded strip plate portion 32 folded back from the other end of 1 in an acute angle direction
From the tip of the folded strip plate portion 32 to the first strip plate portion 31.
And a second strip plate portion 33 having a bolt insertion hole 33a facing the screw hole 31a.

The bolt 34 is inserted upward from the bolt insertion hole 33a of the second strip plate portion 33 of the L-shaped steel fitting 30, and the tip of the bolt 34 is the screw hole 3 of the first strip plate portion 31.
It is screwed to 1a.

The connector 50 has a plate portion 51 having a hole 51a through which only the shaft portion 34a of the bolt 34 can be inserted, and a polygonal head portion 34b of the bolt so that rotation of the polygonal head portion 34b is restricted. Plate part 5 with a space smaller than the maximum length of
1 is provided with a pair of side plates 52 and 53 that are folded back from both ends and that have mounting portions (holes 52a and 53a) for mounting the hanging bolt support lower fitting 40.

The hanging bolt support lower metal fitting 40 is for fixing the upper end portion of the hanging bolt 11 at a desired inclination, and is one metal plate curved in a semicircular shape at the center. A curved elongated hole 41a is provided along the groove 41, a bolt insertion hole 42a is provided in one side plate 42 of the pair of side plates 42 and 43 facing each other, and a screw hole 43a is provided in the other side plate 43.

To attach the upper end of the hanging bolt 11 to the hanging bolt support lower metal fitting 40, a nut 44 is screwed in advance near the upper end of the hanging bolt 11, and a rectangular plate-like pad 45 having a hole 45a on the upper side thereof. Through the upper end of the hanging bolt 11 in this state into the curved long hole 41a from below,
A nut 46 whose lower side bulges in a hemispherical shape is screwed from the upper side of 1a to temporarily fix the upper end of the hanging bolt 11 to the curved long hole 41a.

As shown in FIG. 3, the pad 45 is provided with bending edges 45b, 45b on both sides so as not to rotate with the tightening rotation of the lower nut 44, and the bending portion 4
1 is located outside both ends in the width direction.

Further, on the backing plate 45, four guide protrusions 45 are formed by pressing inwardly into four hemispheres on both sides of the central hole 45a so as to follow the curve of the curved portion 41.
c, 45c, ... Are provided.

In this way, the side plates 52 and 53 of the connector 50 are inserted between the side plates 42 and 43 of the hanging bolt support lower metal fitting 40 to which the upper end of the hanging bolt 11 is attached, and the bolt 47 is inserted.
Through the bolt insertion holes 42a of the side plate 42 through the holes 52a, 53a of the side plates 52, 53, and the screw hole 43a of the side plate 43.
The tip portion of the bolt 47 is screwed onto. In this way, the upper portion of the hanging bolt support lower metal fitting 40 is attached to the lower portion of the connector 50.

As shown in FIGS. 1 and 2, the first strip plate portion 31 comes into contact with the outer surface of the upper first flat plate 10b of the L-shaped steel 10 which is installed laterally with the L-shaped surface facing downward. The L-shaped steel fixture 30 is attached to the L-shaped steel 10 so that the folded strip plate portion 32 comes in contact with the tip of the laterally-oriented first flat plate portion 10b of the L-shaped steel 10 and the downwardly oriented second flat plate portion 10c. Install on.

The shaft portion 34a of the bolt 34, which is inserted through the hole 51a from the lower side of the plate portion 51 of the connecting member 50 and protrudes upward, is connected to the second strip plate portion of the L-shaped steel fitting 30. Three
The bolt 34 is inserted through the bolt insertion hole 33a of No. 3, and the tip of the bolt 34 is applied to the screw hole 31a of the first strip plate portion 31.

Then, the connector 50 is attached to the hole 51a of the plate portion 51.
When it is rotated around, the polygonal head 3 of the bolt 34
Since the side plates 52 and 53 of the connector 50 contact 4b, the bolt 34 rotates. Therefore, the tip of the bolt 34 is screwed into the screw hole 31 a of the first strip plate portion 31.

Therefore, by further rotating the connecting member 50 and gradually projecting the tip of the bolt 34 upward, the plate portion of the connecting member 50 is formed between the second strip plate portion 31 and the head portion 34b of the bolt 34. Make 51 tightly tightened.

The tightening by this rotation is performed by the connecting tool 5.
0 (and the hanging bolt supporting lower metal fitting 40) may be held by hand and rotated, but a pair of operating holes 52b and 53b are provided in the side plates 52 and 53 of the connecting tool 50 below the head 34b of the bolt 34. For example, if a rod-like body 55 such as a screwdriver is inserted into the pair of operation holes 52b and 53b and the coupling tool 50 is rotated based on this principle, it is easy to firmly tighten the bolt 34 without requiring a large force. Becomes

Then, the connecting tool 50 is fixed in a tightened state.
If the hanging bolt support lower fitting 40 is in the orientation shown in FIGS. 1 and 2, the position of the upper end portion of the hanging bolt 11 temporarily fixed as shown in FIG. 2 is shifted along the curved elongated hole 41a to adjust the position. Then tighten the nut 44 on the lower side and
1 may be directed vertically downward.

If the orientation shown in FIGS.
As shown in FIG.
It suffices if the hanging bolt 11 is turned vertically downward so as to face vertically downward.

As described above, in the hanging bolt support device of this embodiment, the head 34b of the bolt 34 is bolted to tighten the bolt 34 for fixing the L-shaped steel fitting 30 to the L-shaped steel 10. There is no need for detailed work such as grasping and rotating with a tightening tool, and since it is only necessary to rotate the connecting tool 50, there is no danger of fine work at a high place near the ceiling or risk of dropping tools, Further, since it is not necessary to insert a tightening tool, the connector 50 can be downsized, and as a result, the hanging bolt support lower metal fitting 40 can also be downsized. Further, since the attachment to the L-shaped steel 10 can be performed only by rotating the connecting tool 50 in this way, the connecting tool 50 can be mounted in a state in which the hanging bolt support lower metal fitting 40 and the hanging bolt 11 are already attached to the connecting tool 50. Since it suffices to rotate, connecting work between the connecting tool 50 and the hanging bolt supporting lower metal fitting 40 by the bolt 47 at a high place near the ceiling, and the hanging bolt supporting lower metal fitting 40 by the nuts 44, 46 of the hanging bolt 11 are performed. Since there is no need for installation work etc., the complexity and danger of detailed work at high places and the risk of dropping nuts are eliminated, and work efficiency is dramatically improved.

As shown in FIG. 5, the side plates 52 and 53 of the connector 50 are provided with locking notches 56 and 57, and the bolts 47 of the hanging bolt support lower metal fitting 40 are locked to the locking notches. It may be inserted into 56, 57 and locked. In addition, at least one of the side plates 52 or 53 has a stopper projection 5
It is desirable to provide 8, 58 so that the suspension bolt support lower metal fitting 40 does not come off from the locking notches 56, 57 due to vibrations such as an earthquake.

6 to 8 show a suspension bolt supporting device 2 according to the present invention.
0 another embodiment is shown. In this embodiment, L
The shaped steel fixture 60 includes a cylindrical first rod-shaped portion 61 having a threaded surface 61a on the outer periphery of the tip, and the first rod-shaped portion 61.
Of the columnar folded rod-shaped portion 62 that is folded back from the other end in an acute angle direction, and extends from the tip of this folded rod-shaped portion 62 in a direction substantially parallel to the first rod-shaped portion 61, and has a threaded surface on the outer periphery of the tip. And a cylindrical second rod-shaped portion 63 having 63a.

Further, the connecting tool 70 is an attachment tool 6 for L-shaped steel.
A plate-like portion 71 having first and second holes 71a and 71b through which the tips of the first and second rod-like portions 61 and 62 of 0 can be inserted.
And a mounting portion provided at the lower portion of the plate-shaped portion 71 for mounting the hanging bolt support lower metal fitting 40.

In the embodiment shown in FIG. 6, for example, this mounting portion is a bent plate portion 72 bent in an L shape at the lower end of the plate portion 71.
And a pair of holes 72b and 71c facing the lower portion of the plate-like portion 71 and the vertical plate 72a at the tip of the bent plate portion 72, and as shown in FIG. The hanging bolt support lower bracket 40 is attached by inserting the bolt 47 of the support lower bracket 40.

Further, as shown in FIG. 7, a pair of support plates 73 and 74 are provided at right angles from both sides of the lower portion of the plate-like portion 71, and a pair of opposed holes 73a are formed in the support plates 73 and 74.
74b is provided, and the bolts 47 of the hanging bolt supporting lower metal fitting 40 are inserted into the holes 73a and 74a to mount the hanging bolt supporting lower metal fitting 40.

Further, as shown in FIG. 8, the supporting plates 73 and 74 may be provided over the entire area on both sides of the plate-shaped portion 71 in order to increase the strength.

In the embodiment shown in FIGS. 6 to 8, the L-shaped steel 1 is installed laterally with the L-shaped surface facing downward as in the case of FIG.
The first rod-shaped portion 61 of the L-shaped steel fixture 60 comes into contact with the outer surface of the first flat plate portion 10b above 0, and the folded rod-shaped portion 6
2 is attached so that the tip of the first flat plate portion 10b of the L-shaped steel 10 contacts the tip of the second flat plate portion 10c.
The first and second rod-shaped portions 6 are formed in the first and second holes 71a and 71b of the plate-shaped portion 71 so as to project outward from the plate-shaped portion 71 of No. 0.
The first and second rod-shaped parts 61, 6 are inserted through the tips of the first and the third parts.
Nuts 76 and 77 are screwed onto the threaded surface of No. 3 and fixed to the plate-like portion 71 in a tightened state.

The hanging bolt support lower metal fitting 40 to which the hanging bolt 11 is attached may be attached to the connecting tool 70 in advance, or may be attached after the connecting tool 70 is fixed to the L-shaped steel fitting 60.

In the embodiment shown in FIGS. 6 to 8, since the nuts 76 and 77 are tightened on the side of the downward flat plate portion 10c of the L-shaped steel 10, the working space of the tightening tool is secured, so that the work can be performed at a high place. The work becomes easy, and if the hanging bolt 11 and the hanging bolt supporting lower metal fitting 40 are attached to the connecting tool 70 in advance, fine work at a high place becomes unnecessary and the risk of a work at a high place is eliminated.

[0036]

As described above, according to the present invention, the hanging bolt can be securely attached to the L-shaped steel installed downward without coming off, the danger in high-altitude work is eliminated, and the work efficiency is high. Get better.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a sectional view showing the same embodiment.

FIG. 3 is a perspective view showing the same embodiment.

FIG. 4 is a cross-sectional view showing the same embodiment.

FIG. 5 is a perspective view showing another embodiment of the present invention.

FIG. 6 is a perspective view showing another embodiment of the present invention.

FIG. 7 is a perspective view showing another embodiment of the present invention.

FIG. 8 is a perspective view showing another embodiment of the present invention.

FIG. 9 is a cross-sectional view showing how to use the hanging bolt fixture.

FIG. 10 is a diagram showing the relationship between the L-shaped steel and the roof material.

FIG. 11 is a cross-sectional view showing a conventional suspension bolt supporting method.

[Explanation of symbols]

10 L-shaped steel 11 hanging bolt 12 roofing materials 20 Hanging bolt support device 30 L Shaped Steel Fixture 40 Hanging bolt support lower bracket 50 connector 60 L Shape Steel Fixture 70 Connector

Claims (5)

[Claims] 1. A first strip plate portion having a screw hole at its tip, a folded strip plate portion folded back from the other end of the first strip plate portion in an acute angle direction, and a tip of the folded strip plate portion. From the first strip plate part to a direction substantially parallel to the first strip plate part, and a second strip plate part having a bolt insertion hole facing the screw hole; A hanging bolt supporting lower metal fitting that fixes the upper end portion at a desired inclination, a plate portion having a hole through which only the shaft portion of the bolt can be inserted, and the plate at a distance that restricts rotation of the polygonal head portion of the bolt. And a connector having a pair of mounting parts for attaching the hanging bolt support lower metal fittings, the shaft of the bolt being inserted into the hole of the plate so as to project outward from the plate of the connector. Of the first flat plate portion on the upper side of the L-shaped steel that is installed laterally with the L-shaped surface facing downward. The first strip plate portion of the fixture for L-shaped steel contacts the surface, and the folded strip plate portion contacts the tip of the first flat plate portion of the L-shaped steel to the tip of the second flat plate portion. The shaft of the bolt to the L
The shaped steel fixture is inserted into the bolt insertion hole of the second strip plate portion, the tip of the bolt is applied to the screw hole of the first strip plate portion, and the coupling tool is attached to the hole of the coupling tool. By rotating as a center, it acts on the polygonal head of the bolt to rotate the bolt, screw the bolt into the screw hole of the first strip plate, and further rotate the connector. Thus, the plate portion of the connector is clamped between the second strip plate portion and the bolt head portion, and the suspension bolt is suspended and supported by the L-shaped steel. Bolt support device. 2. A pair of actuating holes, through which the rod-shaped body is vertically inserted, are provided in the pair of mounting portions of the connector, respectively.
2. The suspension bolt support device according to claim 1, wherein a rod-shaped body is inserted into the pair of actuation holes, and the coupling member is rotated by the rod-shaped body around the hole of the coupling device. 3. The suspension bolt support device according to claim 1, wherein the pair of attachment portions of the connection tool are a pair of holes through which a shaft of a connection bolt attached to an upper portion of the suspension bolt support lower metal fitting can be inserted. 4. The pair of mounting portions of the coupling tool are a pair of locking notches capable of detachably locking the shaft of the coupling bolt mounted on the upper portion of the hanging bolt supporting lower metal fitting. 1. The suspension bolt support device according to 1. 5. A first rod-shaped portion having a threaded surface at its tip, a folded rod-shaped portion folded back in an acute angle direction from the other end of the first rod-shaped portion, and the first rod-shaped portion from the tip of the folded rod-shaped portion. L-shaped steel fixture provided with a second rod-shaped portion extending in a direction substantially parallel to the rod-shaped portion and having a threaded surface, and a hanging bolt support lower portion for fixing the upper end portion of the hanging bolt at a desired inclination. The metal fitting, the plate-shaped portion having the first and second holes into which the tips of the first and second rod-shaped portions of the L-shaped steel fixture can be inserted, and the plate-shaped portion provided below the plate-shaped portion. A connecting member having a mounting portion for mounting the hanging bolt support lower metal fitting, wherein the L-shaped steel is provided on the outer surface of the first flat plate portion on the upper side of the L-shaped steel installed in the lateral direction with the L-shaped surface facing downward. First fixture
Of the L-shaped steel from the tip of the first flat plate portion to the tip of the second flat plate portion so that the rod-shaped portion of the connector comes into contact with the rod-shaped portion of the connecting member outwardly from the plate-shaped portion. The tip ends of the first and second rod-shaped portions are inserted into the first and second holes of the plate-shaped portion so as to project, and the nuts are screwed onto the threaded surfaces of the first and second rod-shaped portions to connect them. A suspension bolt support device, wherein the suspension bolt is supported by suspending the L-shaped steel in a state in which the suspension bolt is clamped to the plate-shaped portion.