Storage unit, storage unit burial method, and storage unit removal method

Abstract

To provide a storage unit, a storage unit burial method, and a storage unit removal method, which can securely fix the unit in the ground and easily remove the same out of the ground.SOLUTION: A storage unit 100 comprises a cylindrical body 10, and rotary vanes 20, 30 provided on the cylindrical body 10. The cylindrical body 10 has an opening 12 that opens at the top end, and has a storage space S for stored goods therein. The rotary vanes 20, 30 generate a thrust in a direction to embed the cylindrical body 10 into the ground when the cylindrical body 10 is rotated in a designated direction, and generate a thrust in a direction to pull up the cylindrical body 10 from the ground when the cylindrical body 10 buried in the ground is rotated in an opposite direction.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to, for example, a storage device that is buried underground, a method for burying the storage device, and a method for removing the storage device. [Background technology]

[0002] Conventionally, a type of storage facility that is buried underground has been devised. This storage facility has a bottomed cylindrical body with an excavation blade at the bottom. This storage facility has a storage space for stored items inside the cylindrical body. This storage facility is inserted into the ground while rotating the cylindrical body, and the excavation blade at the bottom digs a hole, and the storage facility is buried in the ground. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2004-156413 A Summary of the Invention [Problem to be solved by the invention]

[0004] The above-mentioned conventional storage facilities are pushed into the ground, so a pushing force according to the size of the storage facility is required, and large-scale driving devices are required for large storage facilities. In addition, storage facilities installed underground must be able to withstand buoyancy from the ground according to the weight of the storage facility and the stored items, or the volume of the storage facility. In addition, when removing the storage facility, a large-scale driving device is required to pull it out of the ground, and the removal work takes a lot of time and costs money.

[0005] The object of the present invention is to provide a storage device that can be easily installed or removed underground and that can withstand the weight of the cylindrical body and stored items, or the buoyancy generated in the cylindrical body, a method for burying the storage device, and a method for removing the storage device. [Means for solving the problem]

[0006] A storage device according to one embodiment includes a cylindrical body and a rotor attached to the cylindrical body. The cylindrical body has an opening that is open at the upper end side and has an internal storage space for storing stored items. The rotor generates a propulsive force in a direction to embed the cylindrical body in the ground by rotating the cylindrical body in a first direction, and generates a propulsive force in a direction to pull the cylindrical body out of the ground by rotating the cylindrical body in a second direction opposite to the first direction while the cylindrical body is embedded in the ground.

[0007] According to the storage device of this aspect, when the cylindrical body is rotated in a first direction and buried in the ground, earth pressure acts on the rotor, so the cylindrical body can withstand sinking due to its own weight or floating up due to buoyancy. Also, according to the storage device of this aspect, by rotating the cylindrical body buried in the ground in a second direction, a propulsive force is generated in the rotor in a direction that pulls the cylindrical body up from the ground, so that the cylindrical body can be easily removed from the ground.

[0008] In addition, according to the storage device of this aspect, the rotor functions as a bottom part provided on the lower end side of the cylindrical body, so that the rotor can also be used as the bottom part of the storage space, the number of parts of the storage device can be reduced, the number of assembly steps for the storage device can be reduced, and the storage device can be manufactured in a short time and at low cost.

[0009] In addition, the storage device of this aspect further includes a lid capable of liquid-tightly closing the opening of the cylindrical body, which makes it possible to prevent the items stored in the storage space of the cylindrical body from becoming wet with rainwater.

[0010] In addition, the cylindrical body and the rotor are formed of separate members and fixed together, so that the rotor of the storage device removed from the ground can be separated from the cylindrical body and reused by combining the cylindrical body with another rotor, or by combining the rotor with another cylindrical body.

[0011] The impeller may be made of steel and fixed to the tubular body by welding. The impeller may be made of steel and manufactured by casting. The tubular body may be a steel pipe, a stainless steel pipe, or a concrete pipe.

[0012] When the above-mentioned storage device is buried in the ground, the cylindrical body is rotated in a first direction with the lower end side facing the ground surface, and the cylindrical body is buried in the ground by the thrust generated in the rotor by this rotation. As a result, earth pressure acts on the rotor of the storage device buried in the ground, and the cylindrical body can withstand sinking due to its own weight or floating due to buoyancy.

[0013] When burying the above-mentioned storage device in the ground, the storage items are accommodated in the accommodation space of the cylindrical body before the cylindrical body is buried in the ground. This allows the storage device with the storage items accommodated in the accommodation space of the cylindrical body to be buried in the ground, and there is no need to store the storage items in the accommodation space after burying the storage device in the ground, and the storage device can be removed from the site immediately after burying it in the ground.

[0014] When the above-mentioned storage device buried in the ground is to be removed from the ground, the cylindrical body is rotated in the second direction, and the cylindrical body is pulled up from the ground by the propulsive force generated in the rotor by this rotation. This eliminates the need for a large-scale drive device for removing the cylindrical body from the ground, and allows the storage device to be pulled up from the ground simply by rotating the cylindrical body in the second direction, making it possible to remove the storage device in a short time and at low cost. Effect of the Invention

[0015] According to the present invention, it is possible to provide a storage device that can be easily installed or removed underground and that can withstand the weight of the cylindrical body and stored items, or the buoyancy generated in the cylindrical body, a method for burying the storage device, and a method for removing the storage device. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a schematic diagram showing a storage device according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a view of the rotor of the storage device of FIG. 1 as seen from the direction of arrow F2. [Diagram 3] FIG. 3 is a view of the rotor of the storage device of FIG. 1 as seen from the direction of arrow F3. [Figure 4] Figure 4(a) is a view of the main parts of the cylindrical body of the storage device of Figure 1, seen from the same direction as Figure 1, Figure 4(b) is a view of the main parts of Figure 4(a), seen from the direction of arrow F4b, and Figure 4(c) is a view of the main parts of Figure 4(a), seen from the direction of arrow F4c. [Diagram 5] FIG. 5(a) is a view of one of the rotors of the storage device of FIG. 1 as viewed from the direction of arrow F5a, and FIG. 5(b) is a view of the rotor of FIG. 5(a) as viewed from the direction of arrow F5b. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in Figs. 1 to 3, a storage device 100 according to an embodiment includes a cylindrical body 10, which is an example of a cylindrical body, two rotors 20 and 30, and a cover 40. The storage device 100 is buried in soil G below the ground surface Gs (hereinafter, simply referred to as the ground) with an imaginary center line passing through the center of the cylindrical body 10 aligned along the vertical direction. With the storage device 100 buried in the ground, the surface of the cover 40 is disposed substantially flush with the ground surface Gs, and the two rotors 20 and 30 are disposed on the lower end side of the cylindrical body 10. In Figs. 1 to 3, the vertical direction parallel to the center line of the cylindrical body 10 is indicated by the Z axis, and mutually perpendicular directions along horizontal planes perpendicular to the Z axis are indicated by the X axis and the Y axis.

[0018] The cylinder 10 is, for example, a steel pipe or concrete pipe with a diameter of 200 to 600 mm and a length of 2000 mm or less. The cylinder 10 has a substantially circular opening 12 that is open at the upper end side in the axial direction. The lid 40 and the opening 12 are provided with a sealing structure such as a tapered thread, a packing, an inner lid, a catch clip type, a lever band type, or the like, as a structure for liquid-tightly closing the opening 12. The lid 40 can open and close the opening 12 of the cylinder 10.

[0019] The two rotors 20, 30 liquid-tightly close the axial lower end side of the cylinder 10 without any gaps. The two rotors 20, 30 are fixed to the lower end side of the cylinder 10 by, for example, welding. The two rotors 20, 30 function as a bottom portion that closes the axial lower end side of the storage space S inside the cylinder 10. Each rotor 20, 30 is a substantially semicircular steel plate with a diameter of 1200 mm or less and a thickness of 16 to 50 mm.

[0020] In addition to the two rotors 20, 30, a circular steel bottom plate (not shown) or the like may be provided as a bottom portion that closes the lower end side of the accommodation space S. If a gap occurs between the cylindrical body 10 and the two rotors 20, 30 due to a step portion 15 described later, the gap is closed using a vertical plate or the like.

[0021] As shown in Fig. 4, the cylinder 10 has two inclined end faces 14, 16 at its lower end for respectively fixing the two rotors 20, 30. The two inclined end faces 14, 16 are not a single flat surface of an annular shape obtained by cutting the cylinder 10 along an XY plane perpendicular to its center line, but are surfaces obtained by dividing the lower end face of the cylinder 10 in two in the Y-axis direction and inclining in different directions at the same angle in the X-axis direction. Therefore, at both circumferential ends of the two inclined end faces 14, 16, there are step portions 15 in the Z-axis direction.

[0022] One inclined end face 14 is a surface obtained by dividing the lower end face of the cylinder 10 in half in the Y-axis direction into one semicircular annular surface, which is inclined at a predetermined angle in the X-axis direction with respect to the XY plane, and is a surface to which one rotor 20 is attached. The other inclined end face 16 is a surface obtained by dividing the tip face of the cylinder 10 in half in the Y-axis direction into the other semicircular annular surface, which is inclined at the same angle in the opposite direction to the X-axis direction with respect to the XY plane, and is a surface to which the other rotor 30 is attached. The inclination angle of the inclined end faces 14, 16 in the X-axis direction with respect to the XY plane, i.e., the inclination angle of the two rotors 20, 30, is, for example, 5 to 15 degrees, and preferably 10 degrees.

[0023] In this embodiment, a case will be described in which two inclined end faces 14, 16 for fixing two rotors 20, 30 are provided on the lower end side of the cylindrical body 10, but for example, three or more inclined end faces may be provided on the lower end side of the cylindrical body 10. For example, when fixing three rotors to the cylindrical body 10, three inclined end faces may be provided on the lower end side of the cylindrical body 10. In other words, when three or more rotors are provided, the number of inclined end faces may be increased according to the number of rotors.

[0024] The two rotors 20, 30 are formed from flat steel plates of uniform thickness and have approximately the same shape, and therefore, here, the structure of one of the rotors 20 will be described, and a detailed description of the other rotor 30 will be omitted. 5, rotor 20 has, along its outer periphery, a straight edge 21 equivalent to the diameter of a semicircle, an edge 23 equivalent to an arc of a semicircle continuing to edge 21 via a corner 22 at one end of edge 21, and a straight edge 25 continuing to edge 23 via a corner 24 at an end opposite corner 22 of edge 23. The end of edge 25 opposite corner 24 is connected to the other end of edge 21 via corner 26. In other words, rotor 20 has a cutout 27 in a shape in which a part of a semicircular steel plate is cut out at edge 25.

[0025] Edge 25 with cutout 27 formed therein extends linearly between one end 140a (a portion overlapping the lower end of inclined end face 14 in the inclined direction) of annular region 14a where rotor 20 overlaps inclined end face 14 of cylinder 10 and corner 24. Edge 25 may be inclined toward cutout 27 from rear surface 20b toward front surface 20a of rotor 20. In this embodiment, cutout 27 is provided on the lower end side of rotor 20 in the inclined direction, but a cutout may also be provided on the upper end side in the inclined direction. The other rotor 30 has three edges 31, 32, 33 of the same shape along its outer periphery and has cutout 37 on the lower end side in the inclined direction.

[0026] When the rotor 20 is fixed to the cylinder 10, the center of the semicircle of the rotor 20 is aligned with the center line of the cylinder 10, the edge 21 of the rotor 20 is abutted against the step 15 of the cylinder 10, and the back surface 20b of the rotor 20 is brought into contact with the inclined end surface 14, thereby positioning the rotor 20 with respect to the cylinder 10. In this state, the outer peripheral surface 10a on the radially outer side of the inclined end surface 14 of the cylinder 10 is fixed to the back surface 20b of the rotor 20 by welding, and the inner peripheral surface 10b on the radially inner side of the inclined end surface 14 of the cylinder 10 is fixed to the back surface 20b of the rotor 20 by welding. When welding the inner peripheral surface 10b of the cylinder 10 to the back surface 20b of the rotor 20, the storage space S is accessed through the opening 12 of the cylinder 10.

[0027] Thereafter, the other rotor 30 is fixed to the cylinder 10. In this case, the center of the semicircle of the rotor 30 is aligned with the center line of the cylinder 10, the edge 31 of the rotor 30 is abutted against the edge 21 of the rotor 20 and the step 15 of the cylinder 10, and the back surface 30b of the rotor 30 is brought into contact with the inclined end face 16, so that the rotor 30 is positioned relative to the cylinder 10. In this state, the outer peripheral surface 10a on the radially outer side of the inclined end face 16 of the cylinder 10 and the back surface 30b of the rotor 30 are fixed by welding, the inner peripheral surface 10b on the radially inner side of the inclined end face 16 of the cylinder 10 and the back surface 30b of the rotor 30 are fixed by welding, and parts of the edges 21, 31 of the rotors 20, 30 that come into contact at the center of the cylinder 10 are welded. When welding the inner peripheral surface 10b of the cylindrical body 10 and the rear surface 30b of the rotor blade 30, the interior of the accommodation space S is accessed through the opening 12 of the cylindrical body 10.

[0028] When the two rotors 20, 30 are fixed to the cylindrical body 10 in this manner, the lower end side of the cylindrical body 10 is liquid-tightly sealed. This allows a storage space S to be provided inside the cylindrical body 10. When storing or removing an item from the storage space S, the lid 40, which is provided flush with the ground surface Gs, can be removed from the opening 12 of the cylindrical body 10, and the storage space S can be accessed through the opening 12.

[0029] As described above, the storage device 100 of this embodiment can be assembled simply by fixing the two rotors 20, 30 to the lower end side of the cylindrical body 10 and closing the opening 12 on the upper end side of the cylindrical body 10 with the lid 40, and the two rotors 20, 30 can also be used as a bottom that defines the lower end of the storage space S, reducing the number of parts and the number of steps in the assembly work, making it easy to position the members relative to each other and allowing for simple assembly in a short time. Furthermore, if the storage device 100 is small, the cylindrical body 10 and the two rotors 20, 30 can be cast as a single unit.

[0030] Moreover, the rotors 20, 30 can be formed simply by shaping flat steel plates, and bending of the steel plates is not required, and the mechanical strength can be easily adjusted simply by adjusting the steel type and thickness. Furthermore, since the cylinder 10 has the inclined end faces 14, 16 and the step portion 15 for mounting the two rotors 20, 30, it is easy to align the two rotors 20, 30 with respect to the cylinder 10, and no jigs or the like are required for aligning the rotors 20, 30, making assembly easy.

[0031] A method for burying the storage device 100 having the above-mentioned structure in the ground will be described below. As described above, the storage device 100 has a structure in which the rotors 20, 30 with a diameter of 1200 mm or less are fixed to the lower end of a cylindrical body 10 with a diameter of 200 to 600 mm and a length of 2000 mm or less. Therefore, for example, the storage device 100 can be buried in the ground using a small driving device mounted on a vehicle. Examples of small driving devices that can be mounted on a vehicle include a device in which a suspended auger is attached to a rough terrain crane and a steel pipe rotary press. Furthermore, for example, a smaller storage device 100 in which the rotors 20, 30 with a diameter of 800 mm or less are fixed to the lower end of a cylindrical body 10 with a diameter of 400 mm or less can be buried in the ground using a device in which a suspended auger is attached to a UNIC vehicle.

[0032] When burying the storage device 100 in the ground, first, the storage device 100 is attached to the above-mentioned drive device, and the two rotors 20, 30 are placed facing the ground surface Gs so that the storage device 100 is perpendicular to the ground surface Gs. In this state, the storage device 100 is rotated clockwise toward the ground surface Gs and brought into contact with the ground surface Gs.

[0033] When the storage device 100 is rotated and brought into contact with the ground surface Gs, the two rotors 20, 30 dig into the soil, and the excavated soil moves from the front surfaces 20a, 30a of the rotors 20, 30 to the rear surfaces 20b, 30b of the rotors 20, 30 through the cutouts 27, 37, and the excavated soil is pushed upward by the inclination of the rotors 20, 30. This provides the propulsive force for the storage device 100 to dig into the soil.

[0034] When the storage device 100 is embedded in the ground until the surface of the lid 40 closing the opening 12 of the cylinder 10 of the storage device 100 reaches the level of the ground surface Gs due to the rotation of the storage device 100, the rotation of the storage device 100 by the drive device is stopped and the storage device 100 is removed from the drive device. This results in the storage device 100 being embedded in the ground.

[0035] In this state, the two rotors 20, 30 of the storage device 100 are placed at the deepest position underground and are constrained by the surrounding soil. In other words, by constraining the rotors 20, 30 by the soil, the storage device 100 is in a state where it is almost unable to move vertically up and down.

[0036] In contrast, when removing the storage device 100, the storage device 100 can be easily pulled up from the ground by simply connecting the storage device 100 to a drive unit and rotating it in the opposite direction to when it was buried. In this case, a reaction force is applied from the soil to the surfaces 20a, 30a of the two rotors 20, 30, generating a propulsive force in a direction that pulls the storage device 100 upward. For this reason, the drive unit only needs to rotate the storage device 100 in the opposite direction to when it was buried, and there is no need to apply a force in a direction that pulls the storage device 100 upward.

[0037] As described above, according to this embodiment, the storage device 100 can be easily buried in the ground using a small driving device, and can also be easily removed from the ground using a small driving device. Therefore, the storage device 100 can be buried in the ground and can also be removed even in a small place such as a corner of an apartment building or a park.

[0038] Furthermore, according to this embodiment, the cylindrical body 10 having the storage space S is not simply buried in the ground, but the cylindrical body 10 is buried with the two rotors 20, 30 restrained by soil, so that the weight of the cylindrical body 10 and the stored items can be supported, the problem of the storage device 100 sinking can be prevented, and the cylindrical body 10 can withstand the buoyant force acting on it.

[0039] Furthermore, according to this embodiment, the storage device 100 can be buried in the ground after storing the stored items in the storage space S. This allows the installer to bury the storage device 100, which has already stored the stored items in the storage space S, in the ground and then immediately remove it from the site, eliminating the need to open the lid 40 and store the stored items in the storage space S after burying the storage device 100.

[0040] The items stored in the storage device 100 of this embodiment may include emergency supplies such as emergency food, drinking water, and batteries. Such emergency supplies may be stored in a dedicated container in the storage space S. If the cylindrical body 10 of the storage device 100 is long and cannot be reached through the opening 12, the container may be hooked and removed using a tool with a hook attached to the end of a rod. Alternatively, firefighting water or the like may be allowed to flow into the storage space S as the stored item, and may be pumped up by inserting a hose through the opening 12.

[0041] The present invention is not limited to the above-described embodiment, and various modifications can be made in the implementation stage without departing from the gist of the invention. The above-described embodiment includes various inventions, and various inventions can be extracted by combinations selected from the multiple components disclosed. For example, if the problem can be solved and an effect can be obtained even if some components are deleted from all the components shown in the present embodiment, the configuration from which the components are deleted can be extracted as an invention.

[0042] For example, in the above-described embodiment, the case where the rotors 20, 30 are provided with the cutout portions 27, 37 was described, but an approximately semicircular rotor without a cutout portion may also be used, and the present invention can also be applied to a storage device equipped with such a rotor.

[0043] Furthermore, the shape of the rotors 20, 30 is not limited to a flat plate shape, but may be, for example, a bowl shape.

[0044] In the above embodiment, the storage device 100 is described in which the two rotors 20, 30 are fixed to the lower end of the cylindrical body 10, but the rotors 20, 30 may be fixed to another cylindrical body having approximately the same diameter as the cylindrical body 10, and this assembly may be fixed to the lower end of the cylindrical body 10. In this case, after the storage device is removed from the ground, the assembly can be separated from the cylindrical body 10 and reused by combining it with another cylindrical body 10, or by combining the cylindrical body 10 with another assembly. [Explanation of symbols]

[0045] 10...cylinder, 12...opening, 14, 16...inclined end surface, 15...step portion, 20, 30...rotor, 20a, 30a...surface, 20b, 30b...back surface, 21, 23, 25...edge portion, 31, 33, 35...edge portion, 40...lid, 27, 37...cutout portion, 100...storage device, Gs...ground surface.

Claims

1. A cylindrical body having an opening at an upper end side and an internal storage space for storing items; a rotor provided on the cylindrical body, the rotor generating a propulsive force in a direction to embed the cylindrical body in the ground by rotating the cylindrical body in a first direction, and generating a propulsive force in a direction to lift the cylindrical body out of the ground by rotating the cylindrical body in a second direction opposite to the first direction while the cylindrical body is embedded in the ground; A storage device having:

2. The rotor functions as a bottom provided on the lower end side of the cylindrical body.

2. The storage device of claim 1.

3. The nozzle further includes a cover capable of liquid-tightly closing the opening of the cylindrical body.

2. The storage device of claim 1.

4. The cylindrical body and the rotor are formed of separate members and fixed to each other.

2. The storage device of claim 1.

5. The rotor is made of steel and is fixed to the cylindrical body by welding.

2. The storage device of claim 1.

6. The rotor blade is made of steel produced by casting.

2. The storage device of claim 1.

7. The cylindrical body is a steel pipe, a stainless steel pipe, or a concrete pipe; 2. The storage device of claim 1.

8. a lower end side of the cylindrical body of the storage device according to claim 1 facing the ground surface, the cylindrical body being rotated in the first direction, and the cylindrical body being embedded in the ground by a propulsive force generated in the rotor by the rotation; Method of burying the storage device.

9. Before embedding the cylindrical body in the ground, the storage item is stored in the storage space of the cylindrical body. The embedding method according to claim 8.

10. The cylindrical body of the storage device according to claim 1 in a state of being buried in the ground is rotated in the second direction, and the cylindrical body is pulled up from the ground by a thrust force generated in the rotor by the rotation. How to remove the storage device.

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