JP2004083264A - Beam attaching device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a beam attaching device freely and detachably attaching a beam for mounting a suspension device along a ceiling for freely moving the suspension device to assemble and install equipment. <P>SOLUTION: A bolt part 3 of a body 2 constituting this beam attaching device 1 is threaded in a bolt hole 23 provided in the ceiling part 20, the upper surface of a flange 31 of the beam 30 is made to abut or approach to the bottom surface 5 of a beam attachment part 4, and an inner fringe part 10 of a connecting member 9 is inserted in the lower surface of the flange 31 of the beam 30. The connecting member 9 is connected to the beam attachment part 4 with an inverse level difference part 12 of the connecting member 9 brought in contact with a level difference part 7 of the beam attachment part 4, so that the beam 30 is attached to the ceiling part 20. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an attachment device for detachably attaching a beam used for lifting equipment to a ceiling of a building.
[0002]
[Prior art]
For example, when assembling or installing heavy equipment such as a gas circuit breaker (GIS) in a building constituting an underground substation, it is necessary to lift the equipment and move it to a predetermined position. Therefore, conventionally, when constructing a building, a bolt hole formed of a plurality of anchor nuts and the like is formed at predetermined intervals in a ceiling portion thereof, and a hook bolt screwed into the bolt hole (for example, commercially available from Martech). A chain block was attached to the (Freno link bolt), and the equipment was lifted for assembly and installation.
[0003]
[Problems to be solved by the invention]
However, when a plurality of bolt holes are provided in the ceiling at predetermined intervals and a chain block is attached to hook bolts screwed into the holes, there is no problem if the position of the bolt holes matches the assembly position or installation position of the device. However, if they do not match, there is a problem that the posture of the device becomes unstable, and the working efficiency and safety are reduced. Therefore, an object of the present invention is to solve the problem in the conventional hook bolt system, and an object of the present invention is to provide a beam mounting device for that purpose.
[0004]
[Means for Solving the Problems]
The present invention for solving the above-mentioned problems is an apparatus for detachably attaching a beam along a ceiling of a building. And this device is
A main body having a bolt portion at the upper part and a beam mounting portion at the lower portion, and a pair of connecting members detachably connected to the beam mounting portion from the side,
The beam mounting portion has a bottom surface for contacting or approaching the beam, and a side portion provided with a step portion that expands downward,
Each connecting member has an inner flange portion and a side portion having a reverse step portion that fits the step portion of the beam mounting portion,
While screwing the bolt portion into a bolt hole provided in the ceiling portion, the upper surface of the beam flange is in contact with or close to the bottom surface of the beam mounting portion, and the inner flange portion of the connecting member is inserted into the lower surface of the beam flange. The beam is mounted on the ceiling by connecting the connecting member to the beam mounting portion in a state where the reverse step of the connecting member is in contact with the step of the beam mounting portion. Item 1).
[0005]
In the beam mounting device, the beam may be an I-beam on which a lifting device is movably mounted.
[0006]
In any one of the above beam mounting devices, the bolt hole is a bolt hole for mounting a hook bolt previously provided in a ceiling portion (claim 3).
[0007]
In any one of the above beam mounting devices, the ceiling portion to which the beam mounting device is attached may be a wavy deck plate, and the main body may have a shape that can be inserted into a concave portion of the deck plate.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing a state in which a beam is mounted on a ceiling made of a wavy deck plate by a beam mounting device according to the present invention, FIG. 2 is a plan view of the beam mounting device in FIG. 1, and FIG. It is sectional drawing.
[0009]
In these figures, 1 is a beam mounting device, 2 is a main body of the beam mounting device 1, 2a is an upper part of the main body 2, 3 is a bolt portion, 4 is a beam mounting portion, 5 is a bottom surface of the beam mounting portion 4, and 6 is a beam. A side portion of the mounting portion 4, 7 is a step portion provided on the side portion 6, 8 is a hole, 9 is a connecting member, 10 is an inner flange portion of the connecting member 9, 11 is a side portion of the connecting member 9, and 12 is a side. An inverted step portion provided in the portion 11, 13 is a connecting bolt, 20 is a ceiling portion, 21 is a deck plate made of a corrugated steel plate, 22 is a concrete layer, 45 is an anchor nut, 23 is a bolt hole thereof, 30 is a beam, 31 Is an upper and lower flange of the beam 30, and 32 is a leg of the beam 30.
[0010]
The beam mounting device 1 according to the present invention includes a main body 2 having a bolt portion 3 and a beam mounting portion 4, and a pair of connecting members 9.
The main body 2 is integrally formed with an upper portion 2a formed by processing a metal bar or the like into a truncated cone, and a lower portion 2b formed by processing a rectangular cross section. The upper portion 2a forms a fixing portion to which the bolt portion 3 is fixed by welding, and the lower portion 2b forms a beam mounting portion 4. In order to reduce the weight, the beam mounting portion 4 is formed with a vertical hole 8.
[0011]
The lower portion of the bolt portion 3 extends vertically into the upper portion 2a, and the lower end thereof reaches the hole portion 8. A screw portion is formed on the outer periphery of the upper portion of the bolt portion 3, and the screw portion is screwed into the bolt hole 23 of the anchor nut 45 provided on the ceiling portion 20, so that the beam mounting device 1 can be detachably attached to the ceiling portion 20. Attached to.
[0012]
As shown in FIG. 3, the beam mounting portion 4 has a flat bottom surface 5 and four side portions 6, and two parallel side portions 6 are provided with a stepped portion 7 whose bottom is enlarged, respectively. Three bolt holes, each of which has an internal thread, are drilled (penetrated) in each of the side portions 6. The upper surface of the upper flange 31 of the beam 30 is in contact with the bottom surface 5, and the reverse step 12 of the connecting member 9 is in contact with the step 7.
[0013]
Each connecting member 9 is formed by processing a metal block, and is provided on one surface of a side portion 11 with an inverted stepped portion 12 which is aligned with the stepped portion 7 of the beam mounting portion 4 and formed on the beam mounting portion 4. Three bolt holes corresponding to the three bolt holes are formed. Note that no internal thread is formed in the bolt hole of the connecting member 9. Further, an inner flange portion 10 is provided at a lower portion of the connecting member 9 on the side of the reverse step portion 12, and the inner flange portion 10 is inserted into a lower surface of the upper flange 31 of the beam 30.
[0014]
Next, a method of attaching the beam 30 to the ceiling 20 using the beam attaching device 1 will be described. First, the ceiling 20 to which the beam mounting device 1 is attached will be described. In this embodiment, the ceiling 20 is formed by a deck plate 21 made of a corrugated steel plate and a concrete layer 22 formed on the deck plate 21. A plurality of bolt holes 23 extend through the deck plate 21 to the inside of the concrete layer 22, respectively.
[0015]
These bolt holes 23 are formed by, for example, anchor nuts 45 provided with internal threads, and the anchor nuts 45 are fixed to the deck plate 21 by welding.
Note that the beam mounting device 1 of the present invention can be easily mounted even when the ceiling portion 20 is constituted only by the deck plate 21, and in this case, bolts having internal threads formed on the deck plate 21 constituting the ceiling portion 20 are provided. The hole 23 is provided, or the anchor nut 45 provided with the internal thread is welded to a through hole provided in the deck plate 21.
[0016]
Next, the beam 30 to be mounted on the beam mounting apparatus 1 of the present invention will be described. The beam 30 generally made of steel includes an H beam in addition to an I beam as shown in FIG. 1 or FIG. When suspending a block, an I-beam is suitable. In either case of the I-beam or the H-beam, the beams 30 are constituted by upper and lower flanges 31 and legs 32 connecting them, but in the case of the H-beam, the flange width is longer than that of the I-beam. The width of the beam mounting portion 4 is accordingly increased.
[0017]
In order to mount the beam mounting device 1 on the ceiling portion 20, first, a plurality of beam mounting devices 1 are prepared, and the bolt portions 3 of the main body 2 constituting each beam mounting device 1 are screwed into the bolt holes 23, respectively. At this time, since the outer shape of the main body 2 is formed in a truncated conical shape as shown in FIG. 1, the main body 2 can be inserted into the concave portion 21 a on the lower side of the deck plate 21, whereby the beam mounting device can be used. There is an advantage that the height loss can be suppressed, and even when the height of the ceiling from the floor is relatively low, the operation height of the lifting device can be increased by that much.
[0018]
Next, the beam 30 is lifted horizontally using a lift device such as a forklift, and the upper surface of the upper flange 31 is brought into contact with the bottom surface of each beam mounting portion 4. Next, the beam 30 is mounted on each beam mounting device 1 by connecting a pair of connecting members 9 to each beam mounting portion 4. At this time, the reverse step 12 of the connecting member 9 is brought into contact with the corresponding step 7 of each of the beam mounting portions 4, and the inner member 10 is inserted into the lower surface of the flange 31. The beam 30 is stably and reliably attached to the beam attaching device 1 by attaching the connecting bolts 13 to the respective bolt holes provided in the attaching portion 4 and fastening them together.
[0019]
FIG. 4 is a front view showing a state in which the lifting device 40 composed of a chain block is mounted on the beam 30 mounted on the ceiling 20 as described above. The lifting device 40 operates a mounting portion 41 slidably mounted on the lower flange 31 of the beam 30, a pulley portion 42, a lifting chain 43 hooked on the pulley portion 42, and lateral movement of the mounting portion 41. An operation chain 44 is provided. If the weight of the equipment to be lifted is considerably large, a plurality of lifting devices 40 can be mounted on one beam 30 and lifted by these lifting devices 40.
[0020]
【The invention's effect】
As described above, the beam mounting device according to the present invention can be easily mounted on or removed from the ceiling, and the beam can be easily and stably and reliably mounted on or removed from the device mounted on the ceiling. be able to.
In addition, a lifting device such as a chain block can be movably mounted on the beam attached to the device, which makes it possible to lift and assemble and install the device at any position in the length direction of the beam. Become.
[0021]
In addition, by using an I-beam as the beam, the size of the mounting portion constituting the device can be reduced, and the lifting device can be easily and movably supported by the beam.
[0022]
In the above-mentioned device, a bolt hole for hook bolt attachment which is provided at a predetermined interval in the ceiling in advance can be used, so that the beam attachment device can be quickly and inexpensively attached to the ceiling.
[0023]
Further, in the above device, when the ceiling portion is constituted by a wavy deck plate, the main body constituting the device can be formed into a shape that can be inserted into a concave portion of the deck plate. With such a configuration, the height loss due to the beam mounting device can be suppressed thereby, and even when the height of the ceiling from the floor is relatively low, the operation height of the lifting device can be increased by that much.
[Brief description of the drawings]
FIG. 1 is a front view showing a state in which a beam is mounted on a ceiling made of a wavy deck plate by a beam mounting device according to the present invention.
FIG. 2 is a plan view of the beam mounting device in FIG.
FIG. 3 is a side sectional view of FIG. 1;
FIG. 4 is a front view showing a state in which a lifting device 40 is mounted after a beam is mounted on a ceiling using a beam mounting device according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Beam mounting apparatus 2 Main body 2a Upper part 2b Lower part 3 Bolt part 4 Beam mounting part 5 Bottom surface 6 Side part 7 Step part 8 Hole part 9 Connecting member 10 Inner flange part 11 Side part 12 Reverse step part 13 Connecting bolt 20 Ceiling part 21 Deck Plate 21a Recess 22 Concrete layer 23 Bolt hole 30 Beam 31 Flange 32 Leg 40 Lifting device 41 Mounting part 42 Pulley 43 Lifting chain 44 Operating chain 45 Anchor nut

Claims (4)

In an apparatus for detachably attaching a beam 30 along a ceiling 20 of a building,
A main body 2 having a bolt portion 3 at an upper portion and a beam mounting portion 4 at a lower portion,
A pair of connecting members 9 that are detachably connected to the beam mounting portion 4 from the side,
The beam mounting portion 4 has a bottom surface 5 for contacting or approaching the upper surface of the beam 30 and a side portion 6 provided with a step portion 7 whose lower part is enlarged,
Each connecting member 9 has an inner flange portion 10 and a side portion 11 having a reverse step portion 12 that fits the step portion 7 of the beam mounting portion 4,
The bolt portion 3 is screwed into a bolt hole 23 provided in the ceiling portion 20, and the upper surface of the flange 31 of the beam 30 is in contact with or close to the bottom surface 5 of the beam mounting portion 4, and is fixed to the lower surface of the flange 31 of the beam 30. By inserting the inner flange portion 10 of the connecting member 9 and connecting the connecting member 9 to the beam attaching portion 4 in a state where the reverse step portion 12 of the connecting member 9 is in contact with the step portion 7 of the beam attaching portion 4, A beam mounting device, wherein the beam 30 is mounted on the ceiling 20. The beam mounting device according to claim 1, wherein the beam (30) is an I-beam on which the lifting device (40) is movably mounted. 3. The beam mounting device according to claim 1, wherein the bolt hole 23 is a bolt hole for mounting a hook bolt provided in the ceiling 20 in advance. 4. The beam mounting device according to claim 1, wherein the ceiling portion 20 is formed of a wavy deck plate 21, and the main body 2 has a shape that can be inserted into a concave portion 21 a of the deck plate 21.

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