JPS627597Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a fixing structure for a storage tank, which is used when assembling a water tank or the like.

A bolt-fastening structure is used when attaching a water tank to an installation frame, or when attaching an installation frame to a foundation. However, when increasing the number of bolts used to improve the earthquake resistance of a water tank, it is necessary to significantly increase the machining accuracy of the bolt mounting holes, and it is also necessary to increase the number of bolts between multiple bolt mounting holes, and between bolt mounting holes and mounting bolts. Positioning is becoming extremely difficult. This is because the water tank, installation frame, and foundation are manufactured in completely separate processes, making it impossible to process them at the same time. Also, the anchor bolts are inserted into the foundation at the construction site, which results in particularly poor dimensional accuracy. There is a reason for this.

For this reason, conventionally, there is a method of drilling a bolt mounting hole having an inner diameter significantly larger than the bolt outer diameter, but there is a limit to the maximum diameter of the bolt mounting hole, which causes a reduction in the strength of the mounting portion. It is also possible to use a particularly large washer, but if the drilling position of the bolt mounting hole is shifted, the washer may come into contact with other parts and the bolt mounting hole may not match up with the bolt mounting hole in the water tank. arise.

The present invention takes the above-mentioned facts into account, and aims to provide a fixing structure for a storage tank that can easily absorb displacement of the bolt mounting hole and the bolt and firmly fix the storage tank.

The fixing structure for a storage tank according to the present invention has a mounting hole with an inner diameter several times the outer diameter of the bolt, and the fixing plate has an outer diameter larger than the mounting hole of the mounting plate, and the outer diameter of the mounting bolt is larger than the outer diameter of the fixing plate. A long hole for bolt penetration, which has a width dimension slightly larger than the diameter of the tank, is drilled including the center part, and the long hole for bolt penetration is placed at an arbitrary position in the mounting hole to absorb misalignment and securely fix the storage tank. It's getting old.

Embodiments of the present invention will be described below with reference to the drawings.

Figure 1 shows an H-shaped steel 1 that is a frame for installing a water storage tank 10.
The fixing structure 14 according to this embodiment is attached to the part to be attached to 2.
However, this is also an embodiment in which a fixing structure 18 is applied to the part where the H-shaped steel 12 is attached to the foundation 16.

The water storage tank 10 has a plurality of bottom wall unit panels 20 and side wall unit panels 20 connected to each other to form a water storage space 24.
is formed. i.e. these unit panels 2
0 and 22 have a rectangular plate shape, and a flange portion 26 extending perpendicularly from the periphery thereof is connected to an adjacent unit panel to form a block shape. An L-shaped plate 28 is interposed between the bottom wall and the side wall that intersect at right angles, and the flange portions 26 of the bottom wall unit panel 20 and the side wall unit panel 22 are connected to the L-shaped plate 28 and the bolts 3.
0 and nuts 32, the bottom wall and side walls are fixed.

The bolts 30 and nuts 32 that fix the L-shaped plate 28 to the flange portion 26 of the bottom wall unit panel 20 fasten the short pieces of the L-shaped plate 34 together. A bolt attachment hole 36 is bored in the long piece of this L-shaped plate 34, forming a part of the fixing structure 14.

A mounting hole 38 is bored in the horizontal portion 12A of the H-beam 12 in correspondence with the bolt mounting hole 36.
This horizontal portion 12A serves as a mounting plate for fixing the water tank 10. The mounting hole 38 has a size several times the outer diameter of the external thread of the mounting bolt 40 applied to the fixing structure 14, and the fixing plate 42 corresponds to the mounting hole 38.

This fixing plate 42 has an insertion portion 44 that fits into the mounting hole 38 as shown in FIGS.
It consists of a flange portion 46 larger than the outer diameter of. As shown in FIG. 3, this fixing plate 42 has a bolt-through hole 48 formed through its center, that is, its axis, and having a longitudinal dimension slightly smaller than the diameter of the insertion portion 44. The bolt penetration elongated hole 48 is made slightly larger than the outer diameter of the mounting bolt 40, so that the mounting bolt 40 passes through the elongated hole 48 without a large gap between it and the inner periphery in the width direction.

Therefore, when the fixed plate 42 is rotated around the axis within the mounting hole 38, the arrangement of the elongated hole 48 changes, so even if the position of the bolt mounting hole 36 in the L-shaped plate 34 is shifted, Easily attach bolt 40 to elongated hole 48
A nut 50 can be screwed into the penetrating tip.

The axial length H of the insertion portion 44 of the fixed plate 42 is equal to or slightly smaller than the wall thickness W of the horizontal portion 12A of the H-section steel 12.

The fixed structure 18 portion is also similar to the fixed structure 14. In other words, H-shaped steel 1 which is the mounting plate
A mounting hole 38 is formed in the horizontal portion 12B of No. 2, into which an insertion portion 44 of the fixing plate 42 is fitted. However, in this fixing structure 18, a stud bolt 52 embedded in the foundation 16 passes through the elongated hole 48 of the fixing plate 42.

To explain the assembly procedure of this embodiment configured in this way, the foundation 16 is concreted while the stud bolts 52 are erected.

After this foundation 16 is hardened, the H-beam 12 in which the mounting hole 38 has been previously drilled is placed on the foundation 16. In this case, even if the pitch of the stud 52 is inaccurate, the inner diameter of the mounting hole 38 is several times the diameter of the stud 52, so the stud 52 can be easily accommodated in the mounting hole 38. can do.

Here, insert the long hole 48 of the fixing plate 42 into the stud bolt 5.
2 and rotate around the bolt 52, the insertion portion 44 will match the mounting hole 38 at any rotational position and can be fitted into the mounting hole 38. After that, when the nut 50 is screwed onto the stud bolt 52, the collar portion 46 of the fixing plate 42 presses the H-beam 12 against the foundation 16, thereby reliably fixing the H-beam 12 to the foundation 16.
The tightening force of this nut 50 is applied to H through the fixing plate 42.
Since it is transmitted to the section steel 12, the mounting hole 38 is connected to the bolt 5.
Although it is said to be several times larger than 2,
Reliable fixation is possible. In particular, if the length of the insertion portion 44 is such that it comes into contact with the foundation 16 by tightening the nut 50, the tightening force can be further increased.

The water tank 10 with the L-shaped plate 34 attached is placed on the H-shaped steel 12, and the fixed structure 14 is attached by the same assembly as the fixed structure 18. In this case as well, if the fixing plate 42 is rotated around the axis of the mounting bolt 40, the insertion portion 44 can be inserted into the mounting hole 38 of the H-shaped steel 12, and the bolt mounting hole 36 of the L-shaped plate 34 and the H-shaped steel 12 can be inserted. Even if the axis of the mounting hole 38 is misaligned, the bolt 40 and nut 50 can be easily screwed together, and the water tank 10 is securely fixed to the H-shaped steel 12 via the L-shaped plate 34. be able to. In this case as well, the length H of the insertion part 44 of the fixing plate 42 is
If the length is set such that it comes into contact with the L-shaped plate 34 by tightening, the tightening force can be further increased.

Next, FIG. 4 shows a second embodiment of the present invention, which is another embodiment in which the H-section steel 12 is attached to the foundation 16.

In this embodiment, the mounting plate 5 is attached to the horizontal part of the H-beam 12.
4 is reinforced with a pair of triangular plates 56 and welded, and a mounting hole 38 is bored in this mounting plate 54.

Therefore, in this embodiment, even when the dimensions of the H-beam 12 are small, the nut 50 can be easily screwed onto the H-beam 12 to reliably fix the H-beam 16 to the foundation 16.

Next, FIGS. 5 and 6 show a third embodiment of the present invention, in which a fixing structure 58 for fixing the center portion of the bottom wall of the water tank 10 to the H-section steel is shown.

In this embodiment, in addition to an H-beam 12 as an installation frame, an H-beam 6 disposed perpendicular to the H-beam 12 is used.
0 and 62 are each fixed to the foundation 16, and their axes intersect in a cross shape in the plan view as shown in FIG. 6 (however, the mounting structure of these H-beams and the foundation 16 is not shown) ).

The connecting portions of the four bottom wall unit panels 20 are placed on the crisscross portions of these H-beams 12, 60, and 62. Attachment bolts 64 pass through the corners of these bottom wall unit panels 20 from the water storage space 24 to the outside with their axes perpendicular.

These mounting bolts 64 are each made of H-shaped steel 1.
2 and the H-shaped steel 60 or the H-shaped steel 12 and the H-shaped steel 62. As shown in FIG. 7, this bracket 66 has a structure in which a reinforcing L-shaped plate 70 is extended from two adjacent pieces of a rectangular mounting plate 68.
The dial plate 70 is fixed to the H-shaped steel 12, the H-shaped steel 60, and the web 12B of the H-shaped steel 62 with bolts 72 and nuts 74, respectively. This allows the mounting plate 68
is in contact with the lower surface of the horizontal portion 12A of the H-shaped steel 12, 60 or the H-shaped steel 12, 62.

The mounting plate 68 has mounting holes 38 formed therein, into which the insertion portions 44 of the fixing plate 42 fit.

Therefore, in this embodiment as well, each bracket 66
By rotating the insertion portion 44 of the fixing plate 42 inserted into the mounting hole 38 drilled in the mounting plate 68 around the axis, the fixing plate 42 can be rotated around the axis even if the mounting bolt 64 is misaligned. The nut 50 can be easily screwed in by rotating the nut 50 in the opposite direction.

A long nut 76 is screwed onto this bolt 64 after passing through the bottom wall unit panel 20 to clamp the bottom wall unit panel 20, and the bracket 78 is attached to the water storage space 24 together with the bottom wall unit panel 20. They are fastened together and one end of the diagonal brace 80 is supported by a bolt 82 and a nut (not shown).
An end portion (not shown) of the diagonal brace 80 is fixed to the side wall to prevent the side wall from collapsing. This embodiment is advantageous in terms of strength because it is not necessary to drill a mounting hole 38 in the H-section steel.

The present invention can be applied to various combinations other than the above combination of mounting hole 38 and fixed plate 42. That is, in Fig. 8A, mounting hole 38 is simply a circular hole drilled in mounting plate 84, as in the first to third embodiments, while in Fig. 8B the mounting hole is rectangular.
As shown in the cross section in FIG. 8A, a seat hole 86 larger than the mounting hole 38 is drilled coaxially with the mounting hole 38. The mounting hole 38 in FIG. 8D is a circular hole similar to that in FIG. 8A, but the mounting hole 38 is surrounded by a seat hole 86 in FIG.
As shown in the figure, a plurality of guide pins 88 protrude and are sized to circumscribe a circle having the same diameter as the seat hole 86 in Fig. 8C. The mounting hole 38 in Fig. 8E has a structure in which a coaxial guide ring 90 is fixed around it as shown in Fig. 9C, and in Fig. 8F, parallel L-shaped guides 92 are fixed to the mounting plate 84, sandwiching the mounting hole 38 therebetween as shown in Fig. 9D.

On the other hand, the fixing plate 42 may be a rectangular plate as shown in FIG. 10A, and the elongated hole 48 may have a shape extending from the center of the rectangular plate to near its periphery. This rectangular fixing plate 42 is the 8th A,
In order to use the mounting hole 38 in combination with the mounting hole 38 shown in FIG. 8B, it is necessary to make the outer diameter larger than the inner diameter of the mounting hole 38. When used in combination with the mounting hole 38 in FIG.
By moving in the direction perpendicular to the axis of the elongated hole 4
8 can be matched with the mounting bolt.

Further, the fixing plate 42 shown in FIG. 10B is a mere disk having no flange portion, unlike the fixing plates 42 of the first to third embodiments. Also, the long hole 4
8 is the length from the axial center to the peripheral edge, and the outer diameter is larger than the mounting hole 38 in Figs. 8A and 8B, so that it can be freely aligned within a plane perpendicular to the axis of the mounting hole 38. can. Furthermore, if the outer diameter is set to a size that fits into the seat hole 86 in Figure 8C, a size that fits between the plurality of guide pins 88 in Figure 8D, and a size that fits into the guide ring 90 in Figure 8E, As in the first embodiment, positioning can be performed by rotating around the axis of the mounting hole 38.

In the fixing plate 42 of FIGS. 10A and 10B, the elongated hole 48
Of course, it is also possible to extend the holes and drill them from end to end of the fixing plate 42.

The fixing plate 42 shown in FIG. 10C has the same outer diameter as the fixing plates of the first to third embodiments, but the elongated hole 48 extends from the axial center to the peripheral edge of the insertion portion 44. It is in line with the length. Also, this fixed plate 42
The diameter of the collar 46 is the same as that of the guide pin 88 in FIG. 8D.
The guide ring 90 of FIG. 8E may be large enough to be inserted into the guide ring 90 shown in FIG. 8E, and may be rotatable about the axis.

In this way, by appropriately combining the mounting holes 38 shown in FIGS. 8A to 8F and the fixing plates shown in FIGS. Mounting hole 3 along
By moving in the direction perpendicular to the axis of the bolt 8, it is possible to absorb the positional deviation of the bolt mounting hole and the mounting bolt as in the first to third embodiments.

As explained above, in the storage tank fixing structure according to the present invention, a mounting hole having an inner diameter several times the outer diameter of the mounting bolt is bored in the mounting plate, and a long hole is bored in the fixing plate including the center part. This has an excellent effect of absorbing the displacement of the bolt mounting hole and the mounting bolt and firmly fixing the storage tank.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a first embodiment of the fixing structure for a storage tank according to the present invention, Fig. 2 is a side view showing the fixing plate, Fig. 3 is a plan view of the fixing plate, and Fig. 4 is a cross-sectional view showing the first embodiment of the fixing structure for a storage tank according to the present invention. Fig. 5 is an exploded perspective view showing the second embodiment, Fig. 5 is a sectional side view showing the third embodiment of the present invention, Fig. 6 is a plan view of Fig. 5, and Fig. 7 shows the bracket used in the third embodiment. 8A to 8F are plan views showing other shapes of the mounting hole, and FIG. 9A is a plan view showing other shapes of the mounting hole.
Figure 9B is a cross-sectional view along the line of Figure 8D, Figure 9C is a cross-sectional view along the line of Figure 8E, and Figure 9D is a cross-sectional view along the line
The figure is a cross-sectional view taken along the line of FIG. 8F, and FIGS. 10A to 10C are plan views showing other shapes of the fixing plate. 10... Water tank, 12... Installation frame H-shaped steel, 1
4...Fixed structure, 16...Foundation, 18...Fixed structure, 34...L-shaped plate, 36...Bolt mounting hole, 3
8...Mounting hole, 40...Mounting bolt, 42...
Fixed plate, 48... Elongated hole for bolt penetration, 54... Mounting plate, 58... Fixed structure, 60, 62... H-shaped steel, 64... Mounting bolt, 68, 84... Mounting plate, 88... Guide pin, 90...Guide ring, 92...L-shaped guide.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A mounting plate with a mounting hole having an inner diameter several times the outer diameter of the mounting bolt, and an outer diameter of the mounting bolt having an outer diameter larger than the mounting hole of the mounting plate. A fixing plate in which a long hole for passing through the mounting bolt having a width slightly larger than the diameter is drilled including the center thereof, and the mounting plate receives the tightening force of the mounting bolt through the fixing plate. Fixed structure for storage tank. (2) The fixing structure for a storage tank according to claim 1, wherein the fixing plate is rotatably guided around the axis of the mounting hole of the mounting plate. (3) The fixing structure for a storage tank according to claim 1, wherein the fixing plate is movably guided in a direction perpendicular to the axis of the mounting hole of the mounting plate.