JP3948502B2 - Anti-slip device for storage tank - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an anti-skid device for a flat bottom cylindrical storage tank for storing oil or water.
[0002]
[Prior art]
The flat bottom cylindrical storage tank is an anchor bolt with a bracket attached to the side plate of the storage tank and the bottom of the storage tank so that the storage tank will not rise, fall or slide when a load is applied due to an earthquake or strong wind. And is fixed to the foundation of the storage tank.
[0003]
By the way, in a small storage tank having a small diameter and a high height, while the liquid is stored, it does not fall down or slide due to an earthquake or strong wind, but there is a possibility that sliding occurs due to the wind pressure of the strong wind when liquid is empty. Therefore, in such a storage tank, an anchor that can resist the wind pressure of a strong wind is required only during air liquid such as during open inspection. As this anchor, a non-sliding structure is conceivable in which the movement in the horizontal direction is restricted and the movement in the vertical direction is not restricted.
[0004]
As described above, as a storage tank slip prevention device necessary for side slip such as wind pressure, a non-slip device for a flat bottom cylindrical storage tank of Utility Model Registration No. 1990593 according to the present applicant is considered. An outline of the anchor structure of the anti-slip device will be described with reference to FIG. This anti-slip device includes a bracket 21 fixed in the circumferential direction with a uniform separation margin in the vicinity of the lower edge of the side plate 3 of the storage tank 1, and a plurality of embedded in the foundation 4 of the storage tank 1 corresponding to the bracket 21. An anchor 6 is provided, and the bracket 21 and the anchor 6 are slidably engaged by the anchor guide 20 so that the bottom plate 2 of the storage tank 1 does not slide on the foundation 4 due to the wind pressure in a strong wind. Thus, it is formed so as not to restrain the movement in the vertical direction parallel to the axis of the storage tank 1 during an earthquake.
[0005]
[Problems to be solved by the invention]
In the anti-slip device of the conventional example shown in FIG. 3, when the stored liquid is put into the storage tank 1, the side plate 3 swells and deforms greatly, so that a horizontal load is applied to the bracket 21 due to the liquid load, and the anchor guide 20 There is a possibility that the vertical axis is inclined and it becomes difficult for the anchor 6 to slide smoothly up and down in the anchor guide 20. Therefore, when a vertical load is applied to the storage tank 1 at the time of an earthquake, the vertical sliding is impaired, so that the load is applied to the anchor 6 or the bracket 21 and the anchor 6 or the bracket 21 is deformed or damaged. There is a concern that the side plate 3 near the bracket 21 mounting portion may be deformed or damaged.
[0006]
Also, when a horizontal load is transmitted from the anchor 6 of the foundation 4 to the side plate 3 of the storage tank 1 through the bracket 21 due to an earthquake, or when the storage tank 1 receives a load in the horizontal direction due to an earthquake, the bracket 21 A load is applied to the side plate 3 in the vicinity of the mounting portion, and the side plate 3 may be deformed or damaged.
[0007]
In addition, since the anti-slip device of the above-mentioned conventional example has a complicated and robust fixing structure, it is removed when the anchor with the stored liquid is not necessary, and is attached when the anchor at the time of air liquid is necessary. The structure was not removable.
[0008]
The present invention has been made in view of the above-described problems, and does not adversely affect deformation or damage to the side plate of the storage tank, and does not cause deformation or damage to the anchor connecting member. It is an object of the present invention to provide a highly safe storage slip prevention device for a storage tank that has a simple structure that can freely move, restrains horizontal movement and smoothly slides without restraining vertical movement.
[0009]
[Means for Solving the Problems]
A storage tank anti-skid device according to the present invention includes a stopper vertically installed on the upper surface of the bottom plate located on the outer peripheral side of the side plate of the storage tank so as to restrain the horizontal movement without restricting the vertical movement of the storage tank. An anchor that is vertically fixed with the lower portion embedded and fixed to the storage tank foundation , and a connecting tool that is slidable up and down and is detachably connected by inserting the stopper and the anchor in a loosely fitting manner. Is.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The storage tank slip prevention device according to the present invention is such that the bottom plate of the storage tank is indirectly connected to the embedded anchor of the storage tank foundation . The outer peripheral edge of the bottom plate of the storage tank is indirectly connected to an anchor embedded and fixed in the foundation of the storage tank via a loose fitting connector as described in detail below . The indirect connection is formed so as to restrain the horizontal movement without restricting the vertical movement of the storage tank.
[0012]
With respect to the storage tank sliding prevention device according to the present invention, an embodiment in the case of indirectly connecting the outer peripheral edge of the bottom plate of the storage tank and the anchor embedded in the foundation of the storage tank will be described in detail with reference to FIGS. A storage tank 1 for storing oil, water, or the like is formed into a flat bottom cylindrical storage tank from a circular flat plate-like bottom plate 2 and a cylindrical side plate 3. 4 is the foundation of the storage tank 1, and 5 is a dog run on the outer peripheral surface of the foundation 4 of the storage tank 1.
[0013]
The anti-skid device is formed of an anchor 6 whose bottom is embedded and fixed to the base 4, a stopper 7 which is erected and fixed to the outer periphery of the bottom plate 2, and a connector 8 which indirectly connects both the anchor 6 and the stopper 7, The storage tank 1 is connected and fixed to the foundation 4 so that the storage tank 1 at the time of air-liquid does not skid due to wind pressure of strong wind.
[0014]
The stopper 7 is formed of a columnar member, and is vertically installed in contact with the upper surface of the bottom plate 2 located on the outer peripheral side of the side plate 3 of the storage tank 1. The lower part of the anchor 6 made of a cylindrical member is buried and fixed vertically in the dog running 5 of the storage tank 1 foundation 4 at the circumferential outer direction position corresponding to the stopper 7. The connecting tool 8 indirectly connects the stopper 7 and the anchor 6 and is inserted into the respective cylindrical members so as to be slidable without constraining the movement in the vertical direction. Mounting holes 9A and 9B are provided at predetermined positions so as to be detachable so as to constrain horizontal movement and maintain mutual spacing.
[0015]
The stopper 7 has a diameter with sufficient strength that does not bend or break when the storage tank 1 receives a load in the horizontal direction due to an earthquake or strong wind, for example, several millimeters to several tens of millimeters, and perpendicular to the earthquake. The cylindrical member protrudes upward from the bottom plate of several tens of millimeters to several hundreds of millimeters so that it does not come out of the attachment hole 9A of the connector 8 when sliding in the direction. 2 firmly fixed by welding or the like. The anchor 6 has a diameter that does not bend or break when it receives a horizontal load from the storage tank 1 via the connector 8 due to an earthquake or strong wind, for example, several millimeters to several tens of millimeters. And a length that does not come out of the attachment hole 9B of the connector 8 when sliding in the vertical direction due to an earthquake, for example, a cylindrical member that protrudes upward from the upper surface of the dog run 5 of several tens to hundreds of millimeters. The lower part is bent and firmly embedded in the foundation 4.
[0016]
Although the illustrated example shows the case where the stopper 7 is formed of a columnar member, the stopper 7 may be formed of a member such as a circular tube, a rectangular tube, or a molding material. Moreover, although the case where the anchor 6 is formed of a cylindrical member has been shown, the anchor 6 may be formed of a member such as a circular tube, a rectangular tube, or a molding material. In this case, each of the mounting holes 9A and 9B of the connector 8 corresponds to the respective cross-sectional shapes of the stopper 7 and the anchor 6, and has a structure in which the vertical sliding is smooth and detachable. Form.
[0017]
In the case of the plate-like connector 8 as shown in the figure, a flat plate material is used and the attachment holes 9A and 9B are opened and can be easily and easily manufactured. Thus, operations such as attachment / detachment and transportation can be facilitated. Moreover, even when the shape of the mounting hole is a rectangle or various shapes, an opening can be easily formed at a predetermined position corresponding to the appropriate shape.
[0018]
Since the stopper 7 and the anchor 6 of the above-described anti-sliding device are inserted into the mounting holes 9A and 9B of the connector 8 in a loose-fitting manner, it is necessary to prevent the anti-sliding in a state in which the storage liquid is in the storage tank If it is not necessary, remove it from the top and remove it, and if it is necessary to prevent slipping due to strong wind measures during air-liquid inspection such as opening inspection, insert it from above and attach it easily and easily. can do. Therefore, by removing the connector 8 in the liquid storage state, when a vertical load or a horizontal load is applied to the storage tank 1 due to an earthquake, the anti-skid device and the bottom plate 2 of the anti-skid device mounting portion are deformed. Safety is maintained without worrying about damage. Further, by attaching the connector 8 at the time of air-liquid, when the horizontal load is applied to the storage tank 1 due to the wind pressure at the time of strong wind, the skidding of the storage tank 1 is prevented and it is safe.
[0019]
In addition, although illustration is abbreviate | omitted, a connection tool may provide two rings in the both-ends predetermined spacing position of a rod-shaped member, and may form this ring so that it may correspond to an attachment hole. Such a ring-shaped connector can be easily manufactured by forging or the like. Moreover, you may form a connection tool with a pipe-shaped connection tool. This pipe-shaped connector is formed so that two pipes are provided at predetermined intervals at both ends of a rod-shaped member, and the inner diameter of the pipe corresponds to a mounting hole of a slidable guide. This pipe-shaped connector can be easily and easily manufactured using a pipe material. Furthermore, the connection tool may be formed of a member such as a wire or a chain provided with rings at both ends and connecting between the rings. Since such an intermediate part moves freely with respect to twisting or movement in the rotation direction, it is suitable for a relatively small storage tank and can be used easily and easily.
[0020]
【The invention's effect】
A storage tank anti-skid device according to the present invention includes a stopper vertically installed on the upper surface of the bottom plate located on the outer peripheral side of the side plate of the storage tank so as to restrain the horizontal movement without restricting the vertical movement of the storage tank. An anchor that is vertically fixed with the lower portion embedded and fixed to the storage tank foundation , and a connecting tool that is slidable up and down and is detachably connected by inserting the stopper and the anchor in a loosely fitting manner. Therefore, remove the connector when the storage solution is not necessary when it is not necessary to fix it, and attach the connector when it is necessary to fix it when liquid is empty. be able to. In particular, since the connecting tool is installed by inserting a vertically installed stopper and anchor in a loose-fitting manner, when it is not necessary to prevent sliding in a state where the stored liquid is contained in the storage tank, it is removed from above and removed. In addition, when it is necessary to prevent slipping due to strong wind countermeasures during air-liquid such as during open inspection, it can be easily attached and detached as appropriate by inserting it from above. Therefore, since the connector is removed during storage, the storage tank will not be deformed or damaged when the storage tank receives a vertical or horizontal load due to an earthquake or the like. When the storage tank receives a horizontal load due to wind pressure or the like, a skid can be prevented, and the anti-skid device can be applied so as to further improve the safety of the storage tank against earthquakes or strong winds.
[0023]
[Brief description of the drawings]
FIG. 1 is a perspective explanatory view showing a state in which a storage tank anti-skid device according to the present invention is provided in a flat bottom cylindrical storage tank.
FIG. 2 is an explanatory side sectional view of FIG. 1;
FIG. 3 is an explanatory side sectional view showing an outline of a conventional anti-skid device for a flat bottom cylindrical storage tank.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Storage tank 2 Bottom plate 3 Side plate 4 Foundation 5 Dog running 6 Anchor 7 Stopper 8 Connecting tool 9, 9A, 9B Mounting hole 20 Anchor guide 21 Bracket

Claims (1)

In order to constrain the movement in the horizontal direction without restricting the vertical movement of the storage tank, a vertical stopper is installed vertically on the upper surface of the bottom plate located on the outer peripheral side of the side plate of the storage tank, and the bottom is embedded and fixed to the storage tank base. An anti-skid device for a storage tank, characterized in that it is provided with an anchor standing upright, and a connecting tool that allows the stopper and the anchor to be freely fitted and slidably connected in a vertical direction .

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