JPH10167384A - Manhole apparatus for service station - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a lower cylinder supporting an upper cylinder to be easily transported and also assembled in a short time at an installation site. SOLUTION: The manhole apparatus 1 for a service station comprises an upper cylinder 2 buried under the ground at the service station and a lower cylinder 3 supporting the upper cylinder 2. The lower cylinder 3 is of an assembled structure comprising respective plate materials 14 to 17 in four directions assembled and can be transported to an installation site in a disassembled state. Thus the lower cylinder 3 can be easily transported with the respective plate materials 14 to 17 disassembled and comprises a pair of first plate materials 14, 15, a sealing member 22 provided in a groove 21, a pair of second plate materials 16, 17, a fixing and reinforcing member 23 fixed to the first plate materials 14, 15, a reinforcing member 24 movably provided on an outer face of the first plate materials 14, 15, and a through-feed bolt 25 and a nut 26 for fastening the first plate materials 14, 15 with the second plate materials 16, 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manhole device for a gas station installed in a manhole of an underground tank installed in a gas station or the like.

[0002]

2. Description of the Related Art In a gas station or the like, an underground tank for storing an oil solution for each oil type is buried. A manhole is buried between the upper part of the underground tank and the ground. Also, inside the manhole, there are housed a liquid feed line, valve, oil level gauge, etc. for supplying the oil liquid in the underground tank to the measuring machine. Used as an opening for maintenance when performing operations and checking the oil level gauge.

[0003] In this type of manhole device for a gas station, for example, a box-shaped upper cylindrical body and a lower cylindrical body combined so as to surround a plate material from four directions are overlapped, and the periphery of the upper cylindrical body is made of concrete. It is solidified and the surroundings of the lower cylinder are filled with earth and sand. Therefore, the upper cylindrical body and the lower cylindrical body are provided so that the surrounding earth and sand do not enter the space inside the manhole.

[0004] In addition, in a gas station manhole device, since the depth of burying an underground tank varies depending on each site, it can be dealt with by adjusting the vertical position of an upper cylinder and a lower cylinder. Then, the liquid feed pipe is inserted into a hole provided on the side surface of the lower cylindrical body and disposed underground.

[0005]

However, in the conventional manhole device for a gas station, since the upper cylinder is buried in the concrete layer (about 30 cm in thickness), the height of the upper cylinder is relatively low. However, the height of the lower cylinder is larger than that of the upper cylinder so that the lower cylinder is covered to a deeper position in accordance with the burial depth of the underground tank. Therefore, if the lower cylindrical body is manufactured integrally in a factory, there is a problem that it is difficult to handle when transported to a construction site of a gas station because the weight is heavy and the transport space is large.

In addition, since it is necessary to make a hole for inserting a pipe into a side surface of the lower cylinder at a construction site of a gas station,
At that time, it was necessary to move the entire lower cylinder, which was troublesome. In addition, there is a method in which the respective plates constituting the lower cylindrical body are transported in a state of being disaggregated in consideration of portability at the time of transportation, and the respective plates are welded and integrated on site. In this case, it is necessary to perform the welding work at the construction site of the gas station, so that the workability is poor and it has been difficult to efficiently manufacture the lower cylinder.

Accordingly, an object of the present invention is to provide a manhole device for a gas station that solves the above-mentioned problems.

[0008]

In order to solve the above problems, the present invention has the following features. Claim 1
The invention of the present invention relates to a gas station manhole device comprising an upper cylinder closed at the top by a lid, and a lower cylinder supporting the upper cylinder, and provided on an underground tank buried in a gas station. At least, the lower cylindrical body is formed with a pair of first plate members having grooves formed at both end edges and arranged to face each other, and both ends formed in grooves of the pair of first plate materials arranged to face each other. A pair of second
A plate member, a seal member disposed between the groove and an end of the second plate member, and mechanical fastening means for fastening the first plate member and the second plate member. Things.

Therefore, according to the first aspect of the present invention, when transporting, each plate can be easily transported in a disassembled state, and at the time of assembling, the four plate members are fastened in a state in which the respective ends are engaged. This makes it possible to efficiently assemble each plate at the installation site in a short time. A second aspect of the present invention is a gas station manhole device comprising an upper cylinder closed at the top by a lid, and a lower cylinder supporting the upper cylinder, and provided on an underground tank buried in the gas station. , At least a lower cylindrical body of the cylindrical body has a pair of first plate members arranged to face each other with grooves formed at both end edges, and the pair of first plate members arranged to face each other. A pair of second plate members, both ends of which are inserted into the groove, a fixed reinforcing member previously fixed to a surface of the first plate member opposite to the side where the groove is formed, and a groove of the first plate member. A reinforcing member provided on a surface opposite to the formed side so as to be movable below the fixed reinforcing member, and mechanical fastening means for fastening the first plate member and the second plate member. It is a feature.

[0010] Therefore, according to the second aspect of the present invention, since the four plate members can be fastened in a state where the respective end portions are engaged, the respective plate members can be easily transported in a disassembled state during transportation. At the time of assembling, each plate can be efficiently assembled at the installation site in a short time, and the upper portion of the first plate is reinforced by the fixed reinforcing member to increase the strength. Furthermore, the first
Since the lower portion of the plate member is reinforced by the movably provided reinforcing member and the reinforcing member can be moved according to the pipe mounting position, the mounting operation can be easily performed.

According to a third aspect of the present invention, there is provided a fuel supply system comprising an upper cylinder closed at its upper part by a lid, and a lower cylinder supporting the upper cylinder, which is provided on an underground tank buried in a gas station. In the required manhole device, at least a lower cylindrical body of the cylindrical bodies is formed with a pair of first plate members arranged so as to face each other with first hooked bent portions formed at both end edges. And a pair of second plate members formed with hook-shaped second locking portions formed at both end edges and arranged to face each other, and the first locking portion and the second locking portion. An inner fixing member having a first contact portion bent into a shape corresponding to the inner surface of the portion, the inner fixing member having the first contact portion abutting against the inner surfaces of both locking portions, and the first locking member; And a second contact portion bent into a shape corresponding to the outer surface of the second engaging portion and the second engaging portion. An outer fixing member to be brought into contact with the first engaging portion and the second engaging portion, and a seal member disposed between the first abutting portion and the second abutting portion. A mechanical fastening means for fastening between the inner fixing member and the outer fixing member to clamp the first and second locking portions between the first and second contact portions. Is what you do.

Therefore, according to the third aspect of the present invention, the first fixing member is fastened by fastening the inner fixing member and the outer fixing member.
First and second locking portions provided at both ends of the plate material and the second plate material are sandwiched between the first contact portion and the second contact portion, and each end portion of the four plate materials. Since each plate can be easily transported in a disassembled state during transportation, and during assembly, each plate is efficiently mounted at the installation site by fastening between the inner fixing member and the outer fixing member. Can be assembled in a short time.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing a first embodiment of a gas station manhole device according to the present invention, and FIG. 2 is a construction state in which the first embodiment of a gas station manhole device according to the present invention is attached to an underground tank and buried. FIG.

The gas station manhole device 1 comprises an upper cylinder 2 buried in the ground of the gas station, and a lower cylinder 3 supporting the upper cylinder 2, and is placed on an underground tank 4 buried in the gas station. It is attached. Upper cylinder 2 and lower cylinder 3
Is formed in a square shape when viewed from above, and has no box-shaped body having an upper surface and a bottom surface.

An upper end of the underground tank 4 is connected to one end of a liquid sending pipe 5 for sending oil to each measuring machine.
The other end of the liquid feed pipe 5 is inserted through a notch 6 formed in the lower cylindrical body 3 and extends in the horizontal direction. Note that the notch 6 is formed in accordance with the disposition position of the liquid feed pipe 5 after arriving at the site because the disposition position of the liquid feed pipe 5 differs depending on each setting place.

The upper cylinder 2 is embedded in a concrete layer 7, and the lower cylinder 3 is embedded in earth and sand 8 below the concrete layer 7. Therefore, the earth pressure due to the earth and sand 8 acts on the lower cylindrical body 3 from the periphery. The upper cylindrical body 2 is formed by integrally fixing plate members 14 to 17 in four directions in a box shape, and has an opening 18 for maintenance closed by a lid 19 on the upper surface. Further, a triangular stopper 20 is fixed to each corner inside the upper cylindrical body 12. The stopper 20 is used to position the mounting position of the upper cylinder 2 by abutting on a bolt end projecting from the lower cylinder 3 when the upper cylinder 2 is mounted above the lower cylinder 3 as described later. Things.

The lower cylinder 3 is provided with four plate members 14 to 17 in four directions.
It can be transported to the installation site in a disassembled state. Therefore, the lower cylinder 3
Can easily transport each of the plate members 14 to 17 in a disassembled state, despite being larger and heavier than the upper cylindrical body 2. In addition to being able to increase the transportation efficiency, it is possible to move only the surface where holes are to be drilled at the installation site, etc. .

The lower cylindrical body 3 has a pair of first plate members 1 formed with grooves 21 formed at both end edges and arranged to face each other.
4, 15 and a sealing member 22 provided in the groove 21.
And a pair of first plate members 1 arranged to face each other.
A pair of second plate members 16 and 17 whose both ends are inserted into the grooves 21 of the fourth and 15 respectively, and a pair of first plate members 14 and 15 previously fixed to the outer surfaces of the first plate members 14 and 15 by welding on the outer surface opposite to the inner side. Fastening the fixed reinforcing member 23, the reinforcing member 24 provided on the outer surface of the first plate members 14, 15 movably below the fixed reinforcing member 23, the first plate members 14, 15 and the second plate members 16, 17. And a coupling member 27 that couples the lower ends of the first plate members 14 and 15 and the second plate members 16 and 17.

The lower reinforcing member 24 is formed of the first plate material 14,1.
5, the notch 6 can be attached by moving the attachment position according to the length of the notch 6 in the vertical direction. An intermediate portion in the longitudinal direction of the reinforcing member 24 has a hole 24a through which the bolt 10 is inserted.
4a, the first plate members 14, 15 are bolted.
To be fixed. Therefore, the first plate members 14 and 15 are easy to bend because they are long in width, but the reinforcing members 2 are reinforced by the fixed reinforcing members 23 welded on the upper side and screwed on the lower side.
4 prevents deformation due to pressure even when earth pressure of the earth and sand 8 acts.

FIG. 3 is a longitudinal sectional view showing a state in which the upper cylinder 2 is placed above the lower cylinder 3. Second plate material 16, 1
An upper end of 7 is formed with a support portion 28 bent in an L-shape, and an adjustment bolt 29 for adjusting a mounting position of the upper cylindrical body 2 is screwed into the support portion 28 from below. Then, the adjustment bolt 29 is locked by tightening the lock nut 30 after the length of the screw portion protruding above the support portion 28 is adjusted.

Therefore, the upper cylindrical body 2 is adjusted so that the opening 8 is positioned at the same height as the ground by the projecting length of the adjusting bolt 29 corresponding to the distance between the upper part of the underground tank (not shown) and the ground. Adjusted. FIG. 4 is an enlarged cross-sectional view showing a joint portion between the first plate members 14 and 15 and the second plate members 16 and 17.

The first plate members 14 and 15 have the same structure, and are respectively attached as one side plate of the lower cylindrical body 3 facing each other. Hereinafter, the first plate member 4 will be described. The first plate member 14 includes a side plate 31 and engagement portions 32 and 33 that protrude in a U-shape from both ends of the side plate 31.
The engaging portions 32 and 33 extend in parallel in the vertical direction, and the above-described groove 21 is formed between the engaging portions 32 and 33.

A seal member 22 is provided at the back of the groove 21.
Are fitted. Then, the first plate member 4 and the second plate member 16,
When joining the second plate member 17 and the second plate member 17, the end portions of the second plate members 16 and 17 are inserted into the grooves 21 to regulate the engagement position in the left-right direction. The second plate members 16 and 17 have the same structure, and are respectively attached as the other side plates of the lower cylindrical body 3 facing each other. Hereinafter, the second plate member 16 will be described.

The second plate member 16 includes a side plate 34 and contact portions 35 formed at both ends of the side plate 34 in an L-shape. The end face of the contact portion 35 is sealed by contacting the seal member 22 of the groove 21. FIG. 5 is a perspective view showing the coupling member 27 in an enlarged manner.

The connecting member 27 is formed by bending a band-shaped metal plate, and has a U-shaped first groove 36 into which lower ends of the first plate members 14 and 15 are fitted, and a second plate member 16 and 17. It has a U-shaped second groove 37 into which the lower end is fitted. First groove 36
The second groove 37 and the second groove 37 are formed so as to extend in directions orthogonal to each other, and the width of each groove is slightly smaller than the thickness of the lower end of each of the plate members 14 to 17. In addition, the first groove 36, the second
The outer wall portions 36a and 37a forming the groove 37 are provided so as to function as a leaf spring.

Here, a method of assembling the gas station manhole device 1 configured as described above will be described. Before assembling the lower cylinder 3 by combining the components transported to the installation site, a cutout 6 for drawing out the liquid feed pipe 5 into the earth and sand 8 is provided in advance in the lower part of the first plate member 14. At this time, the notch 6 is cut into a length according to the distance from the underground tank 4 to the liquid feed line 5, but since the first plate 14 is separated from other plates, it can be easily processed. it can. Further, a hole (not shown) for inserting the bolt 10 for fixing the reinforcing member 24 is provided at a position above the notch 6 in the first plate member 14.

Next, as shown in FIG.
The contact portions 35 formed at both ends of the second plate members 16 and 17 are inserted into the fifteen grooves 21, and the contact portions 35 are engaged with the grooves 21. As a result, the four plate members 14 to 17 are engaged with each other at right angles from each other, and are formed in a rectangular frame shape when viewed from above. Therefore, the first plate material 14, 1
5 and the side plates 34 of the second plate members 16 and 17 are 4
Combined to form each side of the direction.

Next, a connecting member 27 is attached to the lower end of the corner where the plate members 14 to 17 are connected. That is, the lower ends of the plate members 14 to 17 are fitted into the grooves 36 and 37 of the coupling member 27. The grooves 36 and 37 of the connecting member 27 are
17, the outer wall portions 36a, 37a
Sandwiches the lower end of each of the plate members 14 to 17. This allows
The lower ends of the plate members 14 to 17 are positioned, and each of the plate members 14 to 17 is locked in a non-separable state.

Subsequently, the bolt 10 is inserted into the hole 24 a of the reinforcing member 24 below the fixed reinforcing member 23, and a nut (not shown) is screwed into the tip of the bolt 10 from the inside and tightened. Thus, the reinforcing member 24 is fixed to the first plate members 14 and 15 at a position where the reinforcing member 24 does not interfere with the liquid feed pipe 5.

Next, the bolts 25 are passed through holes provided at both ends of the fixed reinforcing member 23 fixed to the first plate members 14, 15.
Is inserted, and nuts 26 are screwed into screw portions formed at both ends of the through bolt 25 and tightened. Further, the bolts 2 are passed through holes (not shown) provided at both ends of the reinforcing member 24.
5 is inserted, and nuts 26 are screwed into screw portions formed at both ends of the through bolts 25 and tightened. As a result, the space between the first plate members 14 and 15 is tightened, and the second plate member 1
The contact portions 35 formed on both ends of the seals 6 and 17 are pressed against the seal member 22 in the groove 21.

As described above, when the nut 26 screwed to the through bolt 25 is tightened, the contact portion 35 is pressed against the seal member 22 and included in the earth and sand 8 and the earth and sand 8 from the gaps between the respective plate members 14 to 17. It is possible to prevent the water that has entered into the lower cylindrical body 3. Further, the second plate members 16 and 17 sandwiched between the first plate members 14 and 15 are deformed so that the nut 26 is tightened and the intermediate portion expands outward due to the compressive force from the first plate members 14 and 15. . Thus, the reinforcing members are not fixed to the second plate members 16 and 17, but the strength to withstand the earth pressure from the surrounding earth and sand 8 is secured.

In this embodiment, it goes without saying that the fixed reinforcing member 23 may be provided as in the above-described embodiment. In this manner, since the assembly work of the lower cylinder 3 is completed, the lower cylinder 3 can be easily assembled even at the installation site.

Next, as shown in FIG.
The upper cylindrical body 2 is placed on the upper part of the upper part, and the upper cylindrical body 2 is supported at a predetermined height adjusted by the adjusting bolt 29 described above. The gas station manhole device 1 has an underground tank 4 with the upper cylinder 2 mounted on the lower cylinder 3 in this manner.
Mounted on top and buried.

FIGS. 8 and 9 are perspective views showing a modification of the present invention. At the ends of the first plate members 14 and 15, a flange 4 is provided.
1 projects laterally. At the ends of the second plate members 16 and 17, a flange 42 protruding outward is provided so as to face the flange 41 of the first plate members 14 and 15. Further, the second plate members 16, 1 are attached to the ends of the first plate members 14, 15.
A notch 43 into which the flange 42 is fitted is formed.

Then, the first plate members 14, 15 and the second plate member 1
6 and 17 are engaged with the groove 2 at right angles.
1 and the flange 42 is fitted into the notch 43 and positioned. Further, as shown in FIG. 10, a bolt 44 is inserted into through holes 41 a and 42 a provided in the flanges 41 and 42 that are opposed to each other, and a nut 45 is screwed into a screw portion of the bolt 44 and tightened.

Thus, the first plate members 14, 15 and the second plate member 1
6, 17 can be integrally fastened. In this modification, the through bolt as in the above embodiment is unnecessary,
It can be assembled more easily than in the case of the above embodiment. 11 and 12 are perspective views showing a second embodiment of the present invention.

At the ends of the first plate members 14 and 15, an engagement groove 51 formed in a substantially L-shape is provided. The engagement groove 51 includes an inclined portion 52 inclined downward and a hanging portion 53 extending in a hanging direction at the tip of the inclined portion 52. In addition, columnar projections 54 are provided at the ends of the second plate members 16 and 17 at positions where they fit into the engagement grooves 51. And the first
When the plate members 14 and 15 and the second plate members 16 and 17 are engaged at right angles, the contact portion 35 is inserted into the groove 21 and the projection 54 passes through the inclined portion 52 of the engagement groove 51, and Part 35
After contacting with the seal member 22, the protrusion 54 is fitted into the hanging portion 53 of the engagement groove 51.

As a result, the projections 54 are fitted and locked in the engagement grooves 51 so that they cannot be disengaged, and the first plate members 14, 15 and the second plate members 16, 17 are locked in a state of being engaged at right angles. You. In this modified example, bolts and nuts as fastening members are not required, so that the assembling work can be performed extremely easily. That is, the first plate material 14, 1 is efficiently and quickly set at the installation site.
5 and the second plate members 16 and 17 can be assembled integrally.

FIG. 13 is an exploded perspective view showing an enlarged main part of the third embodiment of the present invention, FIG. 14 is a cross-sectional view for explaining an assembled state of the third embodiment, and FIG. It is a longitudinal cross-sectional view which expands and shows the fastening part of an example. First plate material 14, 15
Are provided with first hooks 61 bent in a hook shape when viewed from above. This first locking portion 61
Both ends of the first plate members 14 and 15 are bent in a direction of 90 degrees inside.

Similarly to the first plate members 14 and 15, the second plate members 16 and 17 are also provided with hook-shaped second locking portions 62 at both ends as viewed from above. The second locking portion 62 is bent at the both ends of the second plate members 16 and 17 in the direction of 90 degrees inside. 63 is an inner fixing member, and has a first contact portion 64 bent on both side edges in a shape corresponding to the inner surfaces of the first locking portion 61 and the second locking portion 62,
The first contact portion 64 is attached such that the first contact portion 64 contacts the inner surfaces of the locking portions 61 and 62.

Reference numeral 65 denotes an outer fixing member having a second abutting portion 66 formed on both side edges thereof in a shape corresponding to the outer surfaces of the first locking portion 61 and the second locking portion 62. , Second contact portion 6
6 are attached so as to be in contact with the outer surfaces of both locking portions. Reference numeral 67 denotes a plate-shaped sealing member, which is a first locking portion 61, a second locking portion 62, and a second locking member 65.
Between the first fixing portion 61 and the second fixing portion 62 by a compressive force generated when the inner fixing member 63 and the outer fixing member 65 are fastened. And seal. At the time of assembly, the inner fixing member 63 and the first plate 1
The first locking portion 61 and the second plate member 16,
17 remains in a fixed state with the second locking portions 62 at both ends of the sealing member 67, so that the sealing member 67 does not wear and the sealing member 6
7 can be prevented from being damaged or deteriorated.

Further, the sealing member 67 includes the outer fixing member 6.
Of course, it may be mounted so as to be interposed between the second contact portion 66 and the first locking portion 61 and the second locking portion 62. The inner fixing member 63 is provided with a long hole 68 extending vertically. In this embodiment, three long holes 68 are provided at predetermined intervals at the center of the inner fixing member 63 in the vertical direction.

A hook 69 projects from the inner surface of the outer fixing member 65 so as to face the long hole 68 of the inner fixing member 63. The hook 69 is formed in a plate shape so as to be fitted into the long hole 68 of the inner fixing member 63, and a hook 70 for hooking the long hole 68 on the upper side, and a hook 70 And a locking groove 71 formed between the outer fixing member 65 and the inner surface of the outer fixing member 65. The hooking claw 70 is formed in a trapezoidal shape, and has an inclined portion 72 that is inclined so as to approach the inner surface side of the outer fixing member 65 as it moves downward.

The locking claw 70 fastens the inner fixing member 63 and the outer fixing member 65 to form a first locking portion between the first contact portion 64 and the second contact portion 66. It functions as a mechanical fastening means for sandwiching the first and second locking portions 62. Here, an assembling method of the third embodiment having the above-described configuration will be described.

As shown in FIG. 14, the first locking portion 61 and the second locking portion 62 are brought closer to each other from a direction orthogonal to a predetermined distance. Subsequently, a seal member 67 is attached to the outer surfaces of the first locking portion 61 and the second locking portion 62. Next, the second contact portions 66 provided on both side edges of the outer fixing member 65 are brought into contact with the outer surfaces of the first locking portion 61 and the second locking portion 62. At this time, the first locking portion 61 and the second locking portion 6
In this state, the seal member 67 is interposed between the second contact portion 66 and the second contact portion 66.

Then, the first contact portion 64 of the inner fixing member 63 is brought into contact with the inner surfaces of both locking portions 61 and 62, and
The long hole 68 of the inner fixing member 63 is applied to a hook 69 provided on the inner surface of the outer fixing member 65 so that a hook 70
Into the long hole 68. Further, the locking claw 70 is
8, the inner fixing member 63 passes through the locking claw 70 and reaches the locking groove 71.

As shown in FIG. 15B, when the inner fixing member 63 is moved downward along the inclined portion 72 of the hook 70, the elongated hole 68 is hooked on the hook 70. In addition, since the long hole 68 descends while slidingly contacting the locking groove 71 of the locking claw 70, the space between the inner fixing member 63 and the outer fixing member 65 is reduced, and the first locking portion 61 and the second locking member 61 are reduced. Locking part 6
2 is sandwiched between the first contact portion 64 and the second contact portion 66.

Further, the seal member 67 interposed between the first locking portion 61 and the second locking portion 62 and the second contact portion 66 is compressed, and the both sides of the first plate members 14 and 15 are compressed. And between both sides of the second plate members 16 and 17 are sealed. At this time, since only the force in the compression direction acts on the seal member 67, the seal member 67 does not wear during the assembling, and the sealing performance after the assembling is secured.

As described above, the long hole 68 of the inner fixing member 63
Is fitted to the hook 70 and moved downward, thereby easily fastening both ends of the first plate members 14 and 15 and the second plate members 16 and 17 without using bolts and nuts which require tools. can do. Therefore, at the time of transportation, each plate 14
17 can be easily transported in a disassembled state. At the time of assembling, by fastening the inner fixing member 63 and the outer fixing member 65, the respective plate members 14 to 17 can be efficiently assembled in a short time at the installation site. it can. Moreover, the inner fixing member 6
3 is a first locking portion 61 and a second locking portion 62 on both side edges.
Has a first abutting portion 64 bent to a shape corresponding to the inner surface of the outer fixing member 65, and the outer fixing member 65 has first locking portions 61 on both side edges.
And a second contact portion 66 bent into a hook shape corresponding to the outer surface of the second locking portion 62, and between the first contact portion 64 and the second contact portion 66. Since the locking portions 61 and 62 are sandwiched, the pressure resistance is high and sufficient rigidity is secured.

In the above embodiment, the lower cylinder 3 is transported while being disassembled as an assembly structure, and is assembled at the installation site. However, the present invention is not limited to this, and the upper cylinder 2 can be similarly disassembled and assembled. Needless to say, such a configuration may be adopted.

[0051]

As described above, according to the first aspect of the present invention,
During transport, each plate can be easily transported in a disassembled state, and during assembly, each plate can be fastened in a state where each end of the four plates is engaged, so each plate can be efficiently and quickly installed at the installation site. Can be assembled.

According to the second aspect of the present invention, since the four plate members can be fastened in a state where the respective ends are engaged with each other, the plate members can be easily transported in a disassembled state during transportation. At the time of assembling, each plate can be efficiently assembled at the installation site in a short time, and the upper portion of the first plate is reinforced by the fixed reinforcing member to increase the strength. Furthermore, the first
Since the lower portion of the plate member is reinforced by the movably provided reinforcing member and the reinforcing member can be moved according to the pipe mounting position, the mounting operation can be easily performed.

According to the third aspect of the present invention, the first and second engaging members provided at both ends of the first plate member and the second plate member by fastening the inner fixing member and the outer fixing member. Since the stop portion is sandwiched between the first contact portion and the second contact portion, each end of the four plate members can be fastened, so that each plate member is disassembled during transportation. It can be easily transported, and by assembling the inner fixing member and the outer fixing member at the time of assembling, each plate member can be efficiently assembled at the installation site in a short time.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of a gas station manhole device according to the present invention.

FIG. 2 is a view showing a construction state in which the first embodiment of the gas station manhole device according to the present invention is mounted and buried in an underground tank.

FIG. 3 is a longitudinal sectional view showing a state where an upper cylinder is placed above a lower cylinder.

FIG. 4 is an enlarged cross-sectional view showing a joint portion between a first plate member and a second plate member.

FIG. 5 is an enlarged perspective view showing a coupling member.

FIG. 6 is a perspective view for explaining a process of assembling the lower cylinder.

FIG. 7 is a perspective view showing a state in which an upper cylinder is placed above a lower cylinder.

FIG. 8 is a perspective view showing a modification of the second plate member.

FIG. 9 is a perspective view showing a modification of the first plate member.

FIG. 10 is a cross-sectional view showing a state where a first plate member and a second plate member of a modified example are combined.

FIG. 11 is a perspective view showing a state before the first plate member and the second plate member of the second embodiment are combined.

FIG. 12 is a perspective view showing a state in which a projection of a second plate is engaged with a locking groove of the first plate in the second embodiment.

FIG. 13 is an exploded perspective view showing an enlarged main part of a third embodiment of the present invention.

FIG. 14 is a transverse sectional view for explaining an assembled state of the third embodiment.

FIG. 15 is an enlarged longitudinal sectional view showing a fastening portion of the third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Manhole device for gas stations 2 Upper cylinder 3 Lower cylinder 4 Underground tank 5 Liquid feeding pipeline 6 Notch 14,15 First plate 16,17 Second plate 20 Stopper 21 Groove 22 Seal member 23 Fixed reinforcing member 24 Reinforcement member 25 Through bolt 26 Nut 27 Coupling member 29 Adjustment bolt 41, 42 Flange 43 Notch 44 Bolt 45 Nut 51 Engagement groove 52 Inclined portion 53 Hanging portion 54 Projection 61 First locking portion 62 Second locking portion 63 Inner fixing member 64 first contact portion 65 outer fixing member 66 second contact portion 67 seal member 68 long hole 69 hook for hook 70 hook claw 71 hook groove 72 inclined portion

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Akira Mochida 3-9-1, Meguro, Meguro-ku, Tokyo Tokiko Oil Equipment Co., Ltd. (72) Inventor Norihiko Ishikawa 426 Saedo-cho, Tsuzuki-ku, Yokohama-shi, Kanagawa (72) Inventor Shikata Sushi 426, Saedo-cho, Tsuzuki-ku, Yokohama-shi, Kanagawa Pref.

Claims (3)

[Claims] 1. An upper cylindrical body whose upper part is closed by a lid,
In a manhole device for a gas station, comprising a lower cylinder supporting the upper cylinder and provided on an underground tank buried in a gas station, at least the lower cylinder of the cylinders has grooves formed at both end edges. A pair of first plate members arranged so as to oppose each other, a pair of second plate members arranged so as to oppose each other, and both ends of which are inserted into grooves of the pair of first plate members, respectively; A manhole device for a gas station, comprising: a seal member disposed between the two plate members; and mechanical fastening means for fastening the first plate member and the second plate member. 2. An upper cylindrical body whose upper part is closed by a lid,
In a manhole device for a gas station, comprising a lower cylinder supporting the upper cylinder and provided on an underground tank buried in a gas station, at least the lower cylinder of the cylinders has grooves formed at both end edges. A pair of first plate members arranged so as to oppose each other, a pair of second plate members arranged so as to oppose each other, and both ends of which are inserted into grooves of the pair of first plate members, respectively. A fixed reinforcing member fixed in advance to a surface opposite to the side where the groove is formed, and a lower surface than the fixed reinforcing member on the surface of the first plate member opposite to the side where the groove is formed; A manhole device for a gas station, comprising: a reinforcing member provided; and mechanical fastening means for fastening the first plate material and the second plate material. 3. An upper cylindrical body whose upper part is closed by a lid,
In the gas station manhole device, which is composed of a lower cylinder supporting the upper cylinder and is provided on an underground tank buried in a gas station, at least the lower cylinder of the cylinders is hook-shaped at both end edges. A pair of first plate members formed with bent first locking portions and arranged to face each other, and hook-shaped bent second locking portions formed at both end edges to face each other And a first contact portion bent into a shape corresponding to the inner surfaces of the first locking portion and the second locking portion. An inner fixing member for bringing the contact portion into contact with the inner surfaces of the both locking portions; and a second contact member bent into a shape corresponding to the outer surfaces of the first locking portion and the second locking portion. An outer fixing member having a portion for causing the second contact portion to contact the outer surfaces of the both locking portions; the first locking portion and the second locking portion; A seal member disposed between the first and second contact portions, and a first member and a second contact portion that are fastened between the inner fixing member and the outer fixing member. And a mechanical fastening means for clamping the first and second locking portions.