JPH0622410U - H-shaped steel connection structure - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] The present invention has a secondary H on the side of the main H-section steel.
Concerning the connecting structure of H-section steels in which the section steels are assembled at right angles to each other in the same plane, the main H-section can be easily and surely made without any labor, without drilling bolt insertion holes in the main H-section steel web. The purpose is to assemble steel and sub H-section steel and flexibly respond to design changes. [Structure] The mounting hardware 5 is arranged in each of the four regions divided by the intersections of the main H-section steel and the sub-H-section steel, and the main H-section steel 2
One sub H-section steel web is sandwiched by screwing members 12A penetrating through the mounting holes in the vertical surface portions of the two mounting brackets for sandwiching both side surfaces of one sub H-section web 3A on each side. The two mounting brackets are integrated, and the mounting brackets, which are arranged opposite to each other on both sides of the main H-section steel, are threaded through the mounting holes of their respective joint surfaces to straddle the flange of the main H-section steel. It was connected via the fixing bracket 12.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a connecting structure of H-section steel when a floor support of a double floor such as a clean room is formed of H-section steel, and in particular, a main H-section steel is provided with a sub-H-section steel on its side surface. The present invention relates to an H-shaped steel connection structure that is assembled orthogonally in the same plane.

[0002]

[Prior art]

 Conventionally, in semiconductor manufacturing factories, precision parts factories, etc., there is a possibility that defective products may be manufactured due to minute dust, so precision components are manufactured in a clean room in which dust is reduced as much as possible.

In such a clean room, conventionally, the floor has a double floor structure, the inside of the double floor is used as a flow passage for clean air, and clean air supplied from above is introduced into a lower flow passage. Then, by circulating clean air, some maintain cleanliness inside the clean room.

As a clean room having such a double floor structure, for example, one disclosed in Japanese Utility Model Publication No. 1-168746 is known. 5 and 6 show a floor support of a double floor in this type of clean room, and reference numeral 101 denotes a floor support arranged on a floor slab.

The floor support 101 is supported by a plurality of support legs 102 (only one position is shown in the figure). Further, the floor support 101 is composed of a plurality of main H-section steels 103 placed on top of the support legs 102 and a plurality of sub-H-section steels 104 arranged between the main H-section steels 103. It is formed into a shape.

As shown in FIGS. 6 and 7, the main H-section steel 103 and the sub-H-section steel 104 are connected to each other by an L-shape screwed to the web 103 A of the main H-section steel 103 with a bolt 105. The fixing member 106 is fixed to the web 104A of the sub H-shaped steel 104 with a bolt 105.

That is, the main H-section steel 103 is supported by the support leg 102 with its flange 103B up and down, and the main H-section steel 103 has a sub-H section steel 104 with its flange 104B up and down. Are arranged so as to be orthogonal to the main H-section steel 103, and the flange 103B of the main H-section steel 103 and the flange 104B of the sub-H section steel 104 are substantially flush with each other.

Two L-shaped fixing members 106 are screwed onto the web 103A of the main H-section steel 103 to which the sub-H-section steel 104 is fixed, and a spacer is provided between the back portions 106A thereof. 107 is interposed, and the distance between the back portions 106A of the two fixing members 106 is the thickness distance between the webs 104A of the sub H-shaped steel 104.

Then, the web 104A of the sub H-shaped steel 104 is inserted between these back portions 106, and the back portions 106A of the two fixing members 106 are fixed by the bolts 105 via the web 104A of the sub H-shaped steel 104. The secondary H-section steel 104 is fixed to the main H-section steel 103 by screwing.

On the floor support 101 formed in this way, a floor panel having a large number of flow holes for passing clean air is arranged to form a double floor of a clean room.

[0011]

[Problems to be solved by the device]

 However, in the connecting structure of the H-section steels having the above-described structure, the two fixing members 106 are screwed to the web 103A of the main H-section steel 103, and the sub-H section steel 104 of the sub-H section steel 104 is provided between these back portions 106A. By inserting the web 104A and screwing the back portions 106A of the two fixing members 106 with the bolts 105 via the webs 104A of the sub H-section steel 104, the sub H-section steel 104 is fixed to the main H-section steel 103. Since it is connected to the sub H-shaped steel 104, there is a problem that it takes a lot of time and effort to connect to the sub H-section steel 104.

That is, in order to connect the sub H-section steel 104 to the main H-section steel 103, bolt insertion holes are previously formed in the webs 103A and 104A of the main H-section steel 103 and the sub-H section steel 104, respectively. Since it is necessary to insert the bolts 105 into these bolt insertion holes and screw them in, there is a problem that it is very troublesome. At that time, it is necessary to secure the precision of drilling the bolt 105, but it is difficult to secure the precision unless an expert is used.

Further, when the connecting position of the sub H-section steel 104 is changed due to, for example, an obstacle, a bolt insertion hole is again formed in the web 103 A of the main H-section steel 103. There was a problem that it was not possible to flexibly respond to design changes.

The present invention has been made to solve the above-mentioned problems, and an object thereof is to mount a sub H-section steel on a main H-section steel at right angles in the same plane. It is possible to easily and securely assemble the main H-section steel and the sub-H-section steel without boring through holes for bolts in the steel web and to flexibly respond to design changes. The purpose of the invention is to provide a connecting structure of shaped steel.

[0015]

[Means for Solving the Problems]

 The present invention has a main H-section steel formed by forming flanges on both ends of the web, and a main H-section steel on both sides of the main H-section steel in a state where the web is in a vertical state so as to be orthogonal to the main H-section steel. Is arranged in the same plane as that of the main H-section steel and connects a pair of sub-H-section steels forming flanges at both ends of the web, and mounting holes are formed. A mounting bracket having a first joint surface portion, a second joint surface portion in which a mounting hole is formed, and a vertical surface portion in which the mounting hole is formed and which is integral with the first joint surface portion and the second joint surface portion is provided. The main H-section steel so that a part of the joint surface portion of 1 overlaps one flange of the main H-section steel and the second joint surface portion thereof partially overlaps the other flange of the main H-section steel. And sub H-section steels are arranged in each of the four areas defined by the intersections of the sub-H section steels. The main H-section steel is integrated by sandwiching the web of one sub-H-section steel through a screw member that penetrates the mounting hole in the vertical surface of the two attachment brackets that sandwich both sides of the bracket. The mounting metal fittings that are lined up on both sides of the above are connected through the mounting metal fittings that straddle the flanges of the main H-section steel, with the screwing members passing through the mounting holes of their respective joint surface parts. Characterize.

[0016]

[Action]

 In the present invention, a screw member is passed through the mounting holes of the vertical surface portions of the two mounting brackets that are sandwiched on both sides of the web of the sub H-section steel on each side of the main H-section steel to form the sub-H section steel. One mounting bracket is fixed and integrated, and two mounting brackets integrated into one sub H-section steel are inserted, and two mounting brackets integrated into the other sub-H section steel Once joined, the main H-section steels and the sub-H-section steels on both sides of the main H-section steel are connected at right angles to each other in the same plane through the fittings and fixing fittings.

[0017]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 and 4 show an H-shaped steel connecting structure according to an embodiment of the present invention.

In the figure, reference numeral 1 indicates a part of a floor support for supporting the floor of the clean room. The floor support 1 is composed of a main H-section steel 2 and a pair of sub-H-section steels 3 and 3 connected to the main H-section steel 2 so as to be orthogonal to the main H-section steel 2 and will be described in accordance with an assembling procedure.

That is, the main H-section steel 2 is formed by forming the upper flange 2B and the lower flange 2C at both ends of the web 2A. The sub H-section steel 3 is formed by forming an upper flange 3B and a lower flange 3C at both ends of the web 3A.

The sub H-section steels 3 and 3 are formed on both sides of the main H-section steel 2 with the web 2 A being in the longitudinal direction, and are in the same plane of the main H-section steel 2 so as to be orthogonal to the main H-section steel 2. It is arranged in the same posture as the H-section steel 2 and is connected to the main H-section steel 2 as follows.

As shown in FIG. 2, mounting hardware 5 is arranged in each of four regions defined by the intersections of the main H-section steel 2 and the sub-H-section steels 3 and 3. The mounting member 5 includes a first joint surface portion 6 having a mounting hole 6A formed therein, a second joint surface portion 7 having a mounting hole 7A formed therein, and two mounting holes 8A, 8A formed in the first joint surface. It has a surface portion 6 and a vertical surface portion 8 integrated with the second joint surface portion 7.

The bolts () are attached to the mounting holes 8A and 8A of the vertical surface portions 8 and 8 of the two mounting brackets 5 and 5 which sandwich the both side surfaces of the web 3A of the one sub H-shaped steel 3 on one side of the main H-shaped steel 2. The two fittings 5, 5 are fixed to both side surfaces of the web 3A of the one sub H-section steel 3 by passing through the screwing member 9 and tightening with the nut 10. At this time, the end surface of one of the sub H-section steels 3 is at such a distance that it comes into contact with the side surfaces of the upper and lower flanges 2B and 2C of the main H-section steel 2. Then, a part of the first joint surface portion 6 of the two mounting brackets 5 and 5 overlaps with the lower surface of the upper flange 3B of the sub H-shaped steel 3 respectively, and a portion of the second joint surface portion 7 of the sub H-shaped steel 3 3 is overlapped with the upper surface of the lower flange 3C. Further, a part of the first joint surface portion 6 of the two mounting members 5 and 5 overlaps the lower surface of the upper flange 2 of the main H-section steel 2, and a part of the second joint surface portion 7 of the main H-section steel 2 is formed. It overlaps with the upper surface of the lower flange 2C. A spacer 11 is sandwiched between the vertical surface portions 8, 8 of the two mounting brackets 5, 5. The spacer 11 is formed with bolt notches 11A and 11A.

On the other hand, similarly, the mounting holes 8A of the vertical surface portions 8, 8 of the two mounting brackets 5, 5 for sandwiching both side surfaces of the web 3A of the other sub H-section steel 3 on the other side of the main H-section steel 2 in the same manner. , 8A are passed through bolts (screw members) and tightened with nuts 10, so that the two fittings 5, 5 are fixed to both side surfaces of the web 3A of the other sub H-section steel 3. Since the mounting position of the mounting tool 5 to the main H-section steel 2 and the other sub-H-section steel 3 is the same as described above, the description thereof will be omitted.

In short, a part of the mounting brackets 5, 5 fixedly attached to both sides of both the sub H-shaped steels 3, 3 is fitted between the upper and lower flanges 2B, 2C of the main H-shaped steel 2, The secondary H-section steels 3 and 3 are orthogonal to the main H-section steel 2.

Further, reference numeral 12 indicates a fixing metal fitting, the number of which is two, which crosses over the upper flange 2B of the main H-section steel 2 and two which cross over the lower flange 2C of the main H-section steel 2, Each fixing bracket 12 has the same structure. The fixing member 12 is formed in a plate shape, and welding bolts 12A and 12A are fixed to both ends thereof as screwing members.

The welding bolts 12A, 12A of the respective fixing metal fittings 12 are attached to the mounting holes 6A, 6A of the first joint surface portions 6, 6 of the respective mounting metal fittings 5, 5 arranged facing each other on both sides of the main H-section steel 2. After passing through, tighten the nuts 13 and 13 (only the one for the lower fixing metal fitting 12 is shown in FIG. 1) so that the mounting metal fittings 5 and 5 arranged on opposite sides of the main H-section steel 2 , And are connected via the fixing metal fittings 12.

The welding bolts 12A, 12A of the respective fixing metal fittings 12 are attached to the mounting holes 7A, 7A of the second joint surface portions 7, 7 of the respective mounting metal fittings 5, 5 arranged facing each other on both sides of the main H-section steel 2. After being penetrated, by tightening with nuts 13 and 13, the mounting brackets 5 and 5 arranged on both sides of the main H-section steel 2 facing each other are connected via the fixing bracket 12.

Then, the bolts 9 are inserted into the mounting holes 8A of the vertical surface portions 8 of the two mounting brackets 5 sandwiched on both sides of the web 3A of the sub H-section steel 3 on each side of the main H-section steel 2. Two mounting brackets 5 and 5 are fixed and integrated to the sub H-section steel 3, two mounting brackets 5 and 5 integrated to one sub-H section steel 3, and the other sub-H section steel 3 If the two mounting brackets 5 and 5 integrated with each other are connected through the respective fixing brackets 12, the sub H-section steels 3 on both sides of the main H-section steel 2 are mounted orthogonally in the same plane. It is connected via the metal fitting 5 and the fixing metal fitting 12.

According to the above-mentioned structure, if the sub H-section steels 3 and 3 on both sides of the main H-section steel 2 are joined together through the mounting fittings 5 and the fixing fittings 12 integrally attached thereto, It is possible to connect the main H-section steel 2 to the sub-H section steels 3 and 3 on both sides of the main H-section steel 2 at right angles to each other in the same plane. In order to connect the steels 3 and 3 at right angles to each other in the same plane, it is necessary to fix the support plate for fixing the sub H-section steel 3 by welding or bolting the main H-section steel 2 in advance. In addition, there is no need to perform bolt hole processing on the web 3A of the sub H-section steel 3, and it is no longer necessary to fix the fixing member required in the past to the main H-section steel 2 with high precision. It was

That is, it is easy and reliable to connect the sub H-section steel 3 vertically to the main H-section steel 2 in the same plane without processing the main H-section steel 2 through the mounting bracket 5 and the fixing bracket 12. As a result, the number of man-hours can be significantly reduced compared to the conventional one, and the main H-section steel 2 and the sub-H-section steel 3 can be vertically aligned in the same plane even if they are not scouring workers. It can be easily assembled.

When the connection position of the sub H-section steel 3 is changed by changing the load capacity of the underfloor steel material or carrying in duct piping etc. under the floor due to the layout change of the equipment on the floor, etc. Since it is easy to attach and remove the mounting brackets 5 and fixing brackets 12 to the H-section steel 2 and the sub-H-section steel 3, the design of the main H-section steel 2 can be easily changed without bolt holes. You can respond flexibly.

Further, by connecting the sub H-section steel 3 to the main H-section steel 2 in the same plane, the space under the floor can be widely and effectively used. In this embodiment, the welding bolts 12A and 12A are fixed to both ends of the fixing member 12 as screwing members, but the welding bolts 12A and 12A may not be attached to the fixing member 12.

Further, in this embodiment, the bolt (screw attachment member) 9 for integrating the vertical surface portions 8, 8 of the two fittings 5, 5 is separate from the two fittings 5, 5. However, it can be integrated with one of the two mounting brackets 5 and 5.

[0034]

[Effect of device]

 As described above, according to the present invention, if the mounting brackets that are integrally attached to both sides of the main H-section steel are attached to the sub-H-section steel through the fixing brackets, the main H-section steel is It is possible to connect the sub H-section steels in the same plane at right angles to each other through the mounting bracket and the fixing bracket.

Therefore, in order to connect the sub H-section steel to the main H-section steel, the main H-section steel is not welded or bolted, and the support plate for fixing the sub-H section steel is not fixed in advance. In addition, it is not necessary to perform bolt hole processing on the web of the sub H-section steel, and it is no longer necessary to fix the fixing member, which has been conventionally required, to the main H-section steel with high precision.

That is, it is possible to easily and surely connect the sub H-section steel to the main H-section steel vertically in the same plane through the mounting metal fittings and the fixing metal fittings. The man-hours can be greatly reduced, and the main H-section steel and the sub-H-section steel can be easily assembled vertically in the same plane even if they are not skilled workers.

In addition, when the layout position of the device on the floor is changed, the withstand load of the underfloor steel material is changed, or the connecting position of the sub H-section steel is changed by carrying in duct piping or the like under the floor. Easy mounting and removal of mounting brackets and fixing brackets for shaped steels and sub-H shaped steels, allowing flexible design changes without the need for bolt holes in the main H-shaped steel web. Produce an effect.

[Brief description of drawings]

FIG. 1 is a perspective view showing an assembled state of an H-shaped steel connection structure according to an embodiment of the present invention.

FIG. 2 is an exploded view showing a connecting structure of the H-shaped steel.

FIG. 3 is a partial cross-sectional plan view of the same H-section steel connection structure.

FIG. 4 is a cross-sectional view taken along the line AA of FIG.

FIG. 5 is a plan view showing a conventional floor support of a double floor in a clean room.

6 is a cross-sectional view taken along the line BB of FIG.

7 is a vertical cross-sectional view showing a connected state of the H-shaped steel in FIG.

[Explanation of symbols]

 2 Main H-section steel 3 Sub-H-section steel 2A Web 2B Upper flange 2C Lower flange 5 Mounting bracket 6 First joint surface portion 6A Mounting hole 7 Second joint surface portion 7A Mounting hole 8 Vertical surface portion 8A Mounting hole 9 Bolt (screw attachment) Member) 12 fixing metal fittings 12A bolt (screw member)

Claims (1)

[Scope of utility model registration request] 1. A main H-section steel formed by forming flanges on both ends of the web, and a main H-section steel on both sides of the main H-section steel in a state where the web is in a vertical state so as to be orthogonal to the main H-section steel. Which is arranged in the same plane as that of the main H-section steel and connects a pair of sub-H-section steels having flanges formed at both ends of the web, respectively. Of the first attachment surface part, the second attachment surface part having the attachment hole formed therein, and the first attachment surface portion provided with the attachment hole and the vertical surface portion integrated with the second attachment surface part. The main H-section steel and the sub-H section steel are subordinate to each other so that a part of the joint surface section overlaps one flange of the main H-section steel and a part of the second joint surface section overlaps the other flange of the main H-section steel. They are arranged in the four areas divided by the intersection of the H-section steels, and each side of the main H-section steel has one sub-H-section steel wafer. The two fittings are integrated by sandwiching one sub H-section steel web through a screw member that penetrates through the mounting holes in the vertical surface portions of the two fittings that sandwich both sides of the main H-section steel. H is characterized in that each of the mounting brackets arranged facing each other is connected to each other through a mounting member that penetrates a mounting hole of each joint surface portion thereof, and a fixing bracket that straddles the flange of the main H-section steel. Shaped steel connection structure.