JP6176565B2 - Connection structure of floating roof float - Google Patents

Description

The present invention relates to a floating roof float connecting a floating roof float for a tank having a simple floating roof (a specific outdoor storage tank with a floating lid) and a float by a vibration caused by an earthquake and a swing of a storage liquid. The present invention relates to a connection part structure.

FIG. 9 is an explanatory view of a conventional example showing a situation in which the float 1 is bolted to the flat connecting plate 40, and FIG. 10 is a conventional example of a structure in which the float 1 is directly connected and fixed with bolts without using a connecting plate. FIG. 11 is a side explanatory view showing a conventional example of a structure in which the float 1 is connected and fixed to the column 4.
As in the illustrated example, the connection fixing structure of the floating roof float 1 (1a, 1b) of the conventional example is generally provided with a long hole portion with two pairs of bolts and nuts spaced in the vertical direction in the horizontal direction. The bolt joint structure 2 that connects the expansion and contraction (L) is used, or the pin joint structure 3 that connects the center with a single bolt and nut to enable rotational displacement in the vertical direction, that is, rotation (R). ing.

  In the invention of Japanese Patent Publication No. 53-2204 “Floating Roof Tank” of Patent Document 1, FIG. 3 discloses a structure in which joint pieces of floats are joined to each other by bolts and attached to a column by bolts. FIGS. 4 and 5 disclose a structure in which a joint piece of a single float is joined to a surrounding beam with a bolt and assembled.

  The invention of Japanese Patent Publication No. 57-40037 of Patent Document 2 “Floating Canopy with Pivot Floating Umbrella” discloses a hollow tube support leg and a pivot rod in FIGS. 5A and 5B. FIGS. 6A and 6B show a structure having a pivot and a stick that touches a fixed-length foot. Further, FIGS. 9A and 9B show a pivot contact for supporting a deck that is in longitudinal contact with a foot housing.

  In the invention of Japanese Utility Model Laid-Open No. 62-159493 of “Patent Storage Tank Pontoon Connection Structure”, a pontoon to be connected is inserted from a direction opposite to the sleeve joint, and removal of each pontoon is prevented. Thus, a configuration in which the support leg is attached to the sleeve joint is disclosed.

  In the invention of Japanese Patent Application Laid-Open No. 5-77882 of "Patent Floating Roof", a deck of a floating roof body and a hollow float float that supports the deck to float are engaged with each other through a guide. And a mooring configuration and a floating support configuration are disclosed.

In the invention of Japanese Patent Laid-Open No. 6-239387 “Floating Deck Support Device for Floating Roof Tank” in Patent Document 5, the first and second pontoons extending horizontally, the vertical hollow member, the vertical sleeve, and the block are elastic. The structure which fixed with flexibility and flexibility was disclosed.

Japanese Patent Publication No.53-2204 Japanese Patent Publication No.57-40037 Japanese Utility Model Publication No. 62-159493 JP-A-5-77882 JP-A-6-239387

The bolt joint structure 2 of the float 1 and the connecting plate 40 shown in FIG. 9, the bolt joint structure 2 of the joint part of the float 1 shown in FIG. 10, and the pin joint structure 3 of the float 1 and the support column 4 shown in FIG. There was a fault like.
The bolt joint structure 2 that connects the upper and lower elongated holes with two pairs of bolts and nuts can be expanded or contracted (L) in the horizontal direction but may not be moved in the rotational direction, and may be damaged. The pin joint structure 3 that connects the center with bolts and nuts can be rotated (R) but may not be able to expand or contract in the horizontal direction, and may be damaged. I was worried about the buoyancy of the floating roof.

  Patent Document 1 “Floating Roof Tank” disclosed in the invention of a float single piece joined with bolts and attached to a column with bolts, or a structure where a float single piece is assembled to a surrounding beam with bolts is a long hole. However, it was sometimes damaged by receiving a load in the rotational direction due to a large fluctuation of the liquid during an earthquake.

  Patent Document 2 “A Canopy with a Pivot-Coupled Floating Umbrella” disclosed in the invention of a structure having a pivot bar on a supporting foot and a foot, and a structure of a pivoting contact connection portion of the foot to the housing The left and right wings are structures that can handle only one of the horizontal load and the rotational load, and not both, so there is a risk of damage caused by a large fluctuation of the liquid during an earthquake.

  The structure that is attached to the support leg by being inserted into the sleeve joint of the pontoon disclosed in the invention of Patent Document 3 “Potton Connection Structure of Liquid Storage Tank” can be expanded and contracted in the horizontal direction, It is not a corresponding structure.

  The invention of Patent Document 4 “Floating roof of storage tank” discloses a structure in which a hollow float float is engaged and moored through a guide in a swingable manner, but is not related to a connection structure between a float and a support.

  The invention of Patent Document 5 “Floating Deck Support Device in Floating Roof Tank” discloses a structure in which a hollow member and a vertical sleeve perpendicular to the first and second pontoons are fixed with elasticity and flexibility by a block. However, since it does not correspond to the load in the rotation direction, there was a concern that it would be damaged by a large fluctuation of the liquid during an earthquake.

The present invention has been made in view of the problems of the prior art as described above. The purpose of the present invention is that the float and the connection part of the support column of the floating roof tank are caused by the vibration caused by the earthquake and the rocking of the storage liquid. An object of the present invention is to provide a floating roof float connecting portion structure having both functions of horizontal expansion and contraction and vertical rotation so as not to damage and cause a decrease in buoyancy of the floating roof.

The floating roof float connecting portion structure according to the first aspect of the present invention has a function of allowing the float to connect to each other and the connecting portion between the float and the column to freely expand and contract in the horizontal direction, and to rotate in the vertical direction. a connecting part structure of the floating roof floats, characterized in that the mounting forms a connection rotating plate having a function to, the connection rotation plate, and the surface flat and back plates rotatably connected to both the flat plate A central rotating support shaft, a shaft hole into which the support shaft is rotatably inserted into the surface flat plate, a shaft hole through which the support shaft is inserted into the back surface flat plate, and a space between the support shaft and the surface flat plate. It has a bolt which is erected on vertically the bolt and back plates superimposed the surfaces flat and back flat, the support shaft insert the shaft hole of the surfaces flat and back flat, the front end of the support shaft above It is a connecting rotating plate that is fixedly assembled to the shaft hole of the back plate. The connection rotating plate is interposed on one side of the flat connecting plate for fixing the float and the float to each other, and the adjustment plate is interposed on the other side of the mounting plate and the connecting plate. And, the bolt of the front plate is inserted and fixed to the long hole through which the bolt of the mounting plate is inserted, and the bolt of the back plate is inserted and fixed to the attachment hole of the connection plate,
A bolt is inserted into and fixed to the long hole through which the bolt of the mounting plate is inserted, the bolt insertion hole of the adjustment plate, and the mounting hole of the connection plate .

In the floating roof float connecting portion structure according to the invention of claim 2, the float connecting portion and the connecting portion between the float and the column can be expanded and contracted in the horizontal direction and can be rotated in the vertical direction. A connecting structure of a floating roof float, characterized in that a connecting plate having a function of mounting is formed , and one side of the flat connecting plate for fixing the float mounting plate and the float to each other, A bolt joint structure in which a bolt is inserted into the long hole of the mounting plate and the mounting hole of the connection plate,
The other side of the mounting plate and the connection plate is a pinning structure in which a pin is inserted into a hole in a central portion provided in the mounting plate and an insertion hole of the connection plate .

The floating roof float connecting portion structure according to the first aspect of the present invention has a function of allowing the float to connect to each other and the connecting portion between the float and the column to freely expand and contract in the horizontal direction, and to rotate in the vertical direction. a connecting part structure of the floating roof floats, characterized in that the mounting forms a connection rotating plate having a function to, the connection rotation plate, and the surface flat and back plates rotatably connected to both the flat plate A central rotating support shaft, a shaft hole into which the support shaft is rotatably inserted into the surface flat plate, a shaft hole through which the support shaft is inserted into the back surface flat plate, and a space between the support shaft and the surface flat plate. It has a bolt which is erected on vertically the bolt and back plates superimposed the surfaces flat and back flat, the support shaft insert the shaft hole of the surfaces flat and back flat, the front end of the support shaft above It is a connecting rotating plate that is fixedly assembled to the shaft hole of the back plate. The connection rotating plate is interposed on one side of the flat connecting plate for fixing the float and the float to each other, and the adjustment plate is interposed on the other side of the mounting plate and the connecting plate. And, the bolt of the front plate is inserted and fixed to the long hole through which the bolt of the mounting plate is inserted, and the bolt of the back plate is inserted and fixed to the attachment hole of the connection plate,
Since the bolt is inserted and fixed to the long hole through which the bolt of the mounting plate is inserted and the bolt insertion hole of the adjustment plate and the mounting hole of the connection plate ,
By preventing damage to the float connecting part due to deformation of the floating roof due to liquid swinging during an earthquake, it is possible to prevent buoyancy of the floating roof and to maintain buoyancy. This connection rotating plate has a simple structure and is simplified, is detachable and easy to install and replace.
In order to have both functions that enable horizontal expansion / contraction (L) by the bolt joint that fixes the upper and lower bolts to the long holes, and also enables vertical rotation (R) by the central pin joint. In addition, it is possible to prevent damage to floats and struts due to earthquakes and liquid fluctuations.
In addition, the connecting rotating plate has a simple structure and is easy to manufacture, and can be easily attached to an existing connecting portion requiring modification.
Since these members are manufactured at the factory, they do not require on-site manufacturing and can be easily installed.

In the floating roof float connecting portion structure according to the invention of claim 2, the float connecting portion and the connecting portion between the float and the column can be expanded and contracted in the horizontal direction and can be rotated in the vertical direction. A connecting structure of a floating roof float, characterized in that a connecting plate having a function of mounting is formed , and one side of the flat connecting plate for fixing the float mounting plate and the float to each other, A bolt-joint structure in which a bolt is inserted into the long hole of the mounting plate and the mounting hole of the connecting plate, and the other side of the mounting plate and the connecting plate is connected to the hole in the central portion provided on the mounting plate and the connecting plate. Since the pinning structure with a pin inserted through the insertion hole, the above pinning structure by drilling and pin joining is not required to be manufactured at the factory and can be implemented by drilling and pinning on site, so the existing structure is modified In some cases, it can be easily installed. .

It is a perspective explanatory view showing the situation where a float is supported by a support column in a floating roof float connecting part structure according to the present invention. It is a perspective explanatory view showing the structure of a connection rotating plate. It is sectional explanatory drawing which shows the decomposition | disassembly condition in the embodiment example of a connection rotation board. It is sectional drawing which assembled the connection rotation board shown in FIG. It is perspective explanatory drawing which shows the condition which connects float mutually. It is perspective explanatory drawing which shows the connection part structure of a float and a support | pillar. It is explanatory drawing which shows the example of embodiment of the connection part structure of this application which fixes a float to a flat connection board. It is explanatory drawing which shows the other embodiment which fixes a float to a flat connection board. It is explanatory drawing of the prior art example which shows the condition which bolts a float to a flat connection board. It is side surface explanatory drawing which shows the connection part structure of the prior art example which connects and fixes floats directly. It is side surface explanatory drawing which shows the connection part structure of the prior art example which connects and fixes a float to a support | pillar.

  An embodiment of a floating roof float connecting portion structure according to the present invention will be described with reference to FIGS. The present invention is not limited only to the following embodiments. It goes without saying that changes (for example, omission or addition of components, changes in the shape of components, etc.) can be added to the following embodiments without departing from the gist of the present invention. In addition, the figure shows the outline, only a part is drawn and the detailed structure is omitted.

FIG. 1 shows a situation where a float 1 is supported by a support column 4 in the floating roof float connecting part structure according to the present invention. The upper floating roof (deck board) is not shown.
Reference numeral 1 (1a, 1b, 1c) denotes a float made of a hollow cylindrical float tube, and 4 denotes a support column installed vertically. Reference numeral 5 denotes a connection rotating plate interposed between the connection portions of the float 1 and the support column 4 and is fixed using bolts and nuts.
These connecting rotating plates 5 absorb horizontal expansion / contraction L due to earthquake or liquid oscillation and absorb vertical displacement, that is, rotation R, and can be flexibly adjusted by a necessary amount of expansion / contraction and rotation angle. Therefore, stress concentration does not occur at each connection portion of the float 1 and the support column 4 and damage is not caused. Further, the buoyancy of the floating roof due to the breakage of the float 1 is not caused by the damage of the connecting portion.

FIG. 2A is an explanatory perspective view showing an assembly operation state of the connection rotating plate 5.
The connecting rotating plate 5 is joined to be freely rotatable (shown by R) by a central support shaft 7 using two vertically long rectangular flat plates 6a and 6b, and is vertically moved with the support shaft 7 sandwiched between the surfaces of the flat plate 6a. Two pairs of bolts 8 are erected, and two pairs of bolts 9 are erected on the surface of the flat plate 6b with the support shaft 7 interposed therebetween.

FIG. 2B is an exploded perspective view of the connection rotating plate 5.
Two pairs of upper and lower bolts 8 are erected on the surface of the front plate 6a, and two pairs of upper and lower bolts 9 are erected on the surface of the back plate 6b.
The flat plates 6a and 6b are overlapped, and the support pin 7a is rotatably inserted into the shaft hole 7b located at the center of the flat plate 6a, and further inserted through the shaft hole 7c located at the center of the flat plate 6b. Secure and assemble. As a result, the flat plate 6a and the flat plate 6b have a pin joint structure that is rotatable about the support shaft 7. The connection rotating plate 5 has a simple structure and is easy to assemble.
The members such as the flat plate 6a and the flat plate 6b, the spindle pin 7a, the bolts 8 and 9 are made of stainless steel. For the members such as the flat plates 6a and 6b, an aluminum alloy material may be used in order to reduce the weight.

FIG. 3 is a cross-sectional explanatory view showing an exploded state showing the embodiment of the connection rotating plate 5.
6a and 6b are two vertically long rectangular flat plates, and 7a is a spindle pin. The flat plate 6a is provided with a shaft hole 7b into which the support pin 7a is rotatably inserted, and the flat plate 6b is provided with a shaft hole 7c through which the support pin 7a is inserted and a fixing groove 7d.
The flat plates 6a and 6b are overlapped as shown by the arrows, and the support pin 7a is inserted into the shaft hole 7b and the shaft hole 7c as shown by the two-dot chain line, and the tip of the support pin 7a is brazed to the fixing groove 7d. Assemble and assemble.
8 and 9 are slotted countersunk bolts which are inserted into holes formed in the flat plates 6a and 6b, and the heads 8A and 9A are fixed by brazing or the like so as not to rotate.
The flat bolts 8 and 9 are attached to the flat plates 6a and 6b at the time of manufacture at the factory.
Alternatively, only the support shaft pin 7a may be attached to the flat plates 6a and 6b, and the flat plates 6a and 6b may be rotated on site to insert the flat bolts 8 and 9 into the insertion holes.
In addition, although the said example shows the case where the flat volt | bolts 8 and 9 are embed | buried, you may embed | bolt another shape volt | bolt so that a bolt head may not come out without protruding from the contact surface of flat plate 6a, 6b. Alternatively, stud bolts may be erected on the flat plates 6a and 6b, but in this case, it is necessary to prevent the flat plates 6a and 6b from being deformed and the welded portion from rising.

FIG. 4 is a cross-sectional view of the connecting rotating plate shown in FIG. 3 assembled.
The contact surface 7e of the stacked flat plates 6a and 6b is smooth and free, and the support pin 7a is inserted in a loose fit. Therefore, the flat plate 6a is centered on the support pin 7a as indicated by an arrow R. The flat plate 6b can be rotated smoothly as indicated by an arrow R together with the support pin 7a since the end edge of the support pin 7a is integrated by the fixing groove 7d.

FIG. 5 shows a situation where the floats 1 are connected to each other.
1 (1a, 1b) is a float, and 5 is a connecting rotating plate.
The connecting rotating plate 5 connects two flat plates 6a and 6b with a central support shaft 7 so as to be rotatable as indicated by R and R, and two pairs of upper and lower sides sandwich the support shaft 7 on the surface of the flat plate 6a. Bolts 8 are erected, and two pairs of bolts 9 are erected on the surface of the flat plate 6b with the support shaft 7 interposed therebetween.
Each mounting plate 10a, 10b of the float 1 (1a, 1b) is provided with long holes 11 (11a, 11b) through which bolts are inserted in two places at the top and bottom.
The long holes 11a of the mounting plate 10a of the float 1a are inserted into two pairs of upper and lower bolts 8 of the flat plate 6a on the surface of the connection rotating plate 5 and fixed with nuts. The floats 1a and 1b are both connected to be extendable in the horizontal direction by being inserted through the long holes 11b of the mounting plate 10b of the float 1b and fixed with nuts.
In the connection rotating plate 5, since the front and back flat plates 6a and 6b are rotatable around the central support shaft 7, the connected floats 1a and 1b can also be rotated as indicated by R and R, respectively.

FIG. 6 is a view showing a connection portion structure between the float 1 and the support column 4.
1 (1a, 1b) is a float, 4 is a column, 5 (5a, 5b) is a connection rotating plate, and is fixed using bolts 8 (8a, 8b), 9 (9a, 9b) and nuts (not shown). To do.
The connection rotating plate 5 is a two-layer flat plate and has a pin joint structure that rotates around the center as a support shaft.
The connecting portion 4a of the support column 4 and the long hole 11a of the mounting plate 10a of the float 1a are connected via the connection rotating plate 5a, and the connecting rotating plate 5b is connected to the attaching portion 4b of the support column 4 and the long hole 11b of the mounting plate 10b of the float 1b. Connect through.
The connecting rotating plate 5 absorbs the expansion (L) in the horizontal direction and the rotation (R) in the vertical direction due to an earthquake or liquid swing, thereby attaching the mounting plates 10a, 10b of the float 1 (1a, 1b). It is possible to prevent the mounting plates 4a and 4b of the support column 4 from being damaged.

7A is an assembly diagram for fixing the float 1 (1a, 1b) to the flat connecting plate 40, and FIG. 7B is an exploded view thereof.
The rotary connecting plate 5 described in detail above is interposed on one side of the connecting plate 40, and the floats 1a and 1b are connected to the other side by interposing a thick adjusting plate 50 in order to eliminate the step. .
7 is a support shaft, 8 and 9 are bolts, 10 (10a, 10b) is a mounting plate, 11 (11a, 11b) is a long hole, 12 is a mounting hole of the connecting plate 40, and 13 is a bolt insertion hole of the adjusting plate 50. is there.
Since these members are manufactured at the factory, they do not require on-site manufacturing and can be easily installed.
In addition, although the said example shows the case where the adjustment board 50 is interposed only on one side and it is set as a rotation structure, it can also be set as a rotation structure by interposing the adjustment board 50 on both sides as needed.

FIG. 8 is an explanatory diagram of an embodiment showing a situation in which the float 1 is fixed to the flat connecting plate 40.
In contrast to the conventional bolt joint structure shown in (A), as shown in (B), a hole is formed in the central portion to form a pinning structure 70, and the upper and lower bolts are pulled out and removed to form a rotating structure. Shows the case.
Since the pinning structure 70 by drilling and pin joining is not required to be manufactured at the factory and can be implemented by drilling and pinning on site, the construction can be easily performed when the existing structure is modified.
The pinning structure 70 needs to consider the strength of the pin and the strength of the peripheral edge of the hole.

The connecting part structure using the connecting rotating plate having the function of freely extending and retracting in the horizontal direction and rotating in the vertical direction is not only the connecting part of the float and the column, but also various structures that require turning. It can be applied to the connection part of the structure.

1 float
2-bolt joint structure
3-pin joint structure
4 props
5-connection rotating plate
6 plates
7 spindles
8 surface bolt
9 Back bolt
10 mounting plate
11 long holes
12 mounting holes
13 bolt insertion hole

40 connection plate
50 adjustment plate
70 pinned structure

L Expansion / contraction
R rotation

Claims (2)

It is characterized in that a connecting rotating plate having a function of freely expanding and contracting in the horizontal direction and a function of freely rotating in the vertical direction is mounted and formed on the connecting part of the float and the connecting part of the float and the column. a connecting part structure of the floating roof floats to rotate, the connecting rotary plate, and the surface flat and back flat, a central rotating shaft which connects the flat plates rotatably, said support shaft on said surface flat a shaft hole for inserting freely, possess a shaft hole for inserting the support shaft on the back plate and a bolt which is erected on the bolt and back plates were erected on the surface of a flat plate spaced apart across the support shaft The connection rotating plate is assembled by superimposing the front surface plate and the back surface plate, inserting the support shaft into the shaft hole of the front surface plate and the back surface plate, and fixing the end of the support shaft to the shaft hole of the back surface plate. Te, to fix the mounting plate and said float each other the float flat Jo together with interposed on one side of the connecting rotary plate of the connection plate, the other side of the mounting plate and the connecting plate and is interposed the adjustment plate structure, the long hole for inserting the bolt of the mounting plate The bolts on the front plate are inserted and fixed, and the bolts on the back plate are inserted and fixed in the mounting holes on the connection plate, and the bolts on the adjusting plate and the bolts on the adjustment plate are inserted. A connection structure for a floating roof float, wherein a bolt is inserted and fixed into the insertion hole and the mounting hole of the connection plate . It is characterized in that a connecting plate having a function of freely expanding and contracting in the horizontal direction and a function of freely rotating in the vertical direction is mounted and formed on the connecting part of the float and the connecting part of the float and the support column. A floating roof float connecting portion structure , in which one side of the float mounting plate and the flat connecting plate for fixing the float to each other are bolted to the long hole of the mounting plate and the mounting hole of the connecting plate. It is a bolt joint structure that is inserted, and the other side of the mounting plate and the connection plate is a pinned structure in which a pin is inserted into a hole in the central portion provided in the mounting plate and an insertion hole of the connection plate. the connecting portion structure of the floating roof float you.

Images