JP5814632B2 - Cover joint structure - Google Patents

Description

  The present invention relates to, for example, a joining structure of a cover lid arranged in parallel so as to cover an upper opening of a pit in which a machine and a pump are accommodated and an upper opening of a pit serving as a treatment tank of a water treatment facility.

A pit or the like having an upper opening is covered from the upper part by a cover so that rainwater, harmful drugs, foreign matters, and the like do not enter the pit from the upper opening (see Patent Document 1).
In addition, when covering the upper opening of the pit with the cover, which would be problematic if rainwater or chemicals enter the pit, such as a pit that houses a machine or pump, or a treated water tank at a water purification plant, the front and rear are separated. In the joint structure between the first and second cover lids that are installed between the lid receiving portions and are adjacent to each other on the left and right sides, first protrusions projecting upward are formed on the left and right side edges of the first cover on the second cover side. Are provided over the entire length in the front-rear direction, and second convex portions projecting downward are provided on the left and right side edges of the second cover on the first cover side. Is arranged on the first cover on the inner side of the first convex part, and the upper part of the first convex part is opposed to the inner part of the second convex part. Even if a load is applied from there, there is no gap between the cover and the seam 1 between the cover and the cover enters the water tank 1 such as rain water or chemicals. Various bonding structure such as a structure for joining covering that to be able to prevent the contamination has been previously proposed (see Patent Document 2).

JP 2002-88739 A JP 2003-313934 A

  However, in the cover joining structure proposed in the above-mentioned Patent Document 2, the structure of the cover itself is complicated, and the cost of the cover is increased. However, there is a problem in workability because one cover must be slid while adjusting its direction slightly in the direction of the other cover.

  In view of the above circumstances, the present invention can stably maintain the water-stopping state of the joint portion between the cover and the cover even when a load is applied on the cover by, for example, a person riding on the cover, and the structure of the cover is complicated. Therefore, it is an object of the present invention to provide a cover joining structure that is inexpensive and has good workability.

In order to achieve the above object, the cover joining structure according to the present invention is such that a plurality of cover covers are respectively received from both ends in the longitudinal direction at the periphery of the pit from below, and the side surfaces of the adjacent cover covers in the short direction are substantially A cover joining structure in which the upper openings of the pits are arranged side by side so as to cover each other and the ends of the adjacent cover and the cover are covered with a cover member from above through a sealing material. However, it has an engaging protrusion with a height H protruding above the cover lid at the end in the short direction, and the cover member extends downward from the cover main body and both sides of the cover main body. An engagement concave groove having a depth D that opens downward and formed by the cover body portion and both side wall portions, and has a thickness T when the seal material is unloaded, And said height H, depth D, and thickness T are H> D-. Together are satisfied, in the engaging recess of said cover member, two adjacent covering engagement protrusion of engaged, bis or nails, from said top surface of said cover member two engaging projections of both sides through the cover main body portion through the sidewall portion, driven into covering so that non-penetrating state covering both covering is fixedly connected with the cover member by the driven bis or nails, the seal The material is received on the upper surface of the engaging ridge of the two adjacent cover lids, and compressed between the bottom of the engagement groove of the cover member and the upper surface of the engagement ridge of the two adjacent cover lids. It is characterized by being.

In the present invention, substantially abutting means not only the case where the end surfaces in the short direction of the adjacent cover are completely in close contact but also the case where a small gap is formed between the end surfaces.
Further, if the gap between the end faces becomes too large, the width of the cover member must be increased, and therefore it is preferably set to 50 mm or less.

Although the cover joining structure of the present invention is not particularly limited, the screw or nail is driven into the cover in a non-penetrating state or a sealing material in the non-penetrating state so as to ensure a more reliable sealing property. The configuration adjacent to the engagement protrusion of the cover lid is stepped higher from the other part, and the engagement protrusion is further stepped higher than this step, It is preferable that the lower surface of the both side walls of the engaging groove of the cover member be received by a portion adjacent to the engaging protrusion of the cover.
Further, the cover member is not particularly limited, but for example, it is preferable to form the cover member in a U-shaped cross section because the structure is simple and can be manufactured at low cost.

In addition, the cover is not particularly limited, but rainwater and chemicals that have fallen on the cover are smoothly drained from a position above the upper opening of the pit or treatment tank to a position outside the pit or treatment tank.
It is preferable to form the cover body in a side-view mountain shape or arch shape that descends from the middle part toward both sides in the longitudinal direction, or a single-flow structure that descends from one side in the longitudinal direction toward the other side.

  The cover and the cover member are not particularly limited, and are formed of, for example, a fiber reinforced foam thermosetting resin, a fiber reinforced resin, a thermoplastic resin such as polyvinyl chloride, aluminum, or a composite material thereof. Above all, in light of weight reduction and considering productivity and strength, the fiber reinforced foamed thermosetting resin plate formed by continuous molding is subjected to at least one of laminating and cutting processes. It is preferable to manufacture.

Examples of the thermosetting resin constituting the fiber reinforced foamed thermosetting resin include urethane resin, epoxy resin, vinyl ester resin, unsaturated polyester resin, phenol resin, and the like, and hard ones are preferable.
The reinforcing fiber may be, for example, any of inorganic fibers such as glass fibers, carbon fibers, and metal fibers, and organic fibers such as natural fibers and synthetic fibers. However, glass fibers are suitable in terms of strength and economy. Yes. Examples of the glass fiber include glass roving, glass roving cloth, glass mat, and continuous strand mat. These fibers may be used alone, or two or more layers may be laminated, or long fibers and short fibers may be mixed and used.

In addition, in order to improve compressive strength and reduce costs in fiber reinforced foamed thermosetting resins, inorganic fillers such as calcium carbonate, gypsum, talc, aluminum hydroxide, clay, shirasu balloon, perlite, glass balloon A light-weight aggregate such as may be added.
Furthermore, as the fiber reinforced foamed thermosetting resin, a commercially available molded product such as “Slon Neo Lumber FFU” manufactured by Sekisui Chemical Co., Ltd. can be laminated or cut and used.

  The sealing material is not particularly limited as long as water can be stopped, and examples thereof include chloroprene foam and urethane foam. Among them, chloroprene foam having high elasticity and small distortion due to compression is preferable.

As described above, the bonding structure of the cover according to the present invention is such that the plurality of covers are each received at both ends in the longitudinal direction from below at the peripheral edge of the pit, and the lateral sides of the adjacent cover are substantially abutted Are arranged side by side, and the upper opening of the pit is covered, and the adjacent cover and the cover lid are covered from above with a cover member through a sealing material from above, and the cover is short. An engagement protrusion having a height H protruding above the cover lid is provided at a direction end, and the cover member includes a cover main body portion and side wall portions extending downward from both sides of the cover main body portion. An engagement concave groove having a depth D opened downwardly formed by the cover main body portion and both side wall portions , the sealing material having a thickness T when no load is applied, and the high height When the depth H, the depth D, and the thickness T satisfy H> DT Moni, in engaging recess of said cover member, two adjacent covering engagement protrusion of engaged, bis or nails, the both sides of the two engaging projections from the upper surface of the cover member through the sidewall portion through the cover main body, driven into covering so that non-penetrating state covering lid, both covering this implanted bis or nails fixedly connected with the cover member, wherein the sealing material, wherein Since it is received by the upper surface of the engaging ridge of the two adjacent cover lids, and is compressed between the bottom of the engaging groove of the cover member and the upper surface of the engaging ridge of the two adjacent cover lids . The structure of the cover is not complicated, and the pit and the treatment tank can be covered with the cover in a stable water stop state without increasing the cost.

BRIEF DESCRIPTION OF THE DRAWINGS It is 1st Embodiment of the cover junction structure of this invention, Comprising: It is a cross-sectional perspective view explaining the installation method. It is a cross-sectional view of the cover member part in the fixed state of the cover member of the joining structure of FIG. It is sectional drawing explaining the attachment method of the cover member of the joining structure of FIG. 1, Comprising: The figure (a) is a state before engaging an engaging part with the engaging ditch | groove of a cover member, the figure (a). Represents a state after the engaging portion is engaged with the engaging concave groove of the cover member. It is 2nd Embodiment of the joining structure of the cover lid of this invention, Comprising: It is a cross-sectional view of the cover member part in the fixed state of a cover member. It is sectional drawing explaining the attachment method of the cover member of the junction structure of FIG. 4, Comprising: The state before engaging an engaging part to the engaging ditch | groove of a cover member is represented. It is 3rd Embodiment of the joining structure of the cover lid of this invention, Comprising: It is a cross-sectional view of the cover member part in the fixed state of a cover member. It is sectional drawing explaining the attachment method of the cover member of the junction structure of FIG. 6, Comprising: The state before engaging an engaging part to the engaging ditch | groove of a cover member is represented. It is 4th Embodiment of the joining structure of the cover lid of this invention, Comprising: It is a cross-sectional view of the cover member part in the fixed state of a cover member. It is sectional drawing explaining the attachment method of the cover member of the junction structure of FIG. 8, Comprising: The state before engaging an engaging part to the engaging groove of a cover member is represented. FIG. 9 is a longitudinal sectional view of a cover lid portion according to a fifth embodiment of the cover lid joining structure of the present invention. It is 6th Embodiment of the junction structure of the cover of this invention, Comprising: It is a longitudinal cross-sectional view of the cover part.

Hereinafter, the present invention will be described in detail with reference to the drawings showing embodiments thereof.
1 to 3 show a first embodiment of a cover lid joining structure according to the present invention.

As shown in FIGS. 1 to 3, in this joining structure, the joint portion between the cover lid 1 a and the cover lid 1 a is covered by the cover member 2.
As shown in FIGS. 1 and 2, the cover member 2 includes a plurality of sealing members 3 a that are watertightly compressed between the upper surface of the engagement protrusion 12 of the cover lid 1 a and the bottom surface of the engagement groove 23. It is fixed to the cover lid 1 a by screws 4.
More specifically, the cover lid 1 a includes a cover main body 11, leg portions 13, and engagement protrusions 12.
The cover main body 11 is formed so as to gradually descend from the central portion in the longitudinal direction toward both ends, and has an arch shape in side view.
That is, the cover main body 11 is obtained by, for example, previously joining a face material made of a glass fiber reinforced foamed urethane resin (for example, ESLON Neo Lumber FFU manufactured by Sekisui Chemical Co., Ltd.) to be the cover main body 11 in an arch shape. It is done.

The leg portion 13 is a rod-like body provided in parallel with the longitudinal edge of the cover body 11 and covers the cover body 11 from below so as to receive the cover body 11 from the lower side slightly toward the center. It is fixed to the adhesive.
Moreover, the leg part 13 is formed with the glass fiber reinforced foaming urethane resin similar to the cover body 11.

  The engaging ridge 12 is formed by bonding a rectangular bar having a height H and made of glass fiber-reinforced foamed urethane resin similar to the cover body 11 to the upper surface of both ends of the cover body 11 in the short direction. Is formed. That is, the engagement protrusion 12 protrudes from the upper surface of the cover body 11 by the height H.

The cover member 2 is made of glass fiber reinforced foamed urethane resin (for example, Slon Neo Lumber FFU manufactured by Sekisui Chemical Co., Ltd.), is composed of a cover main body portion 21 and two side wall portions 22, and has a depth that opens downward. D engagement grooves 23 are provided.
That is, the cover main body portion 21 has an arch shape having a slightly larger radius than the cover main body 11, and has a long band shape that is substantially the same as the length of the engagement protrusion 12 in the longitudinal direction.

The side wall portion 22 is formed by sticking and fixing a rod-like material having a rectangular cross section having the same thickness as the depth D to the lower surfaces of both sides of the cover body portion 21 in the width direction.
The depth D of the engaging groove 23 is set so as to satisfy D> H with respect to the height H of the engaging protrusion 12.

The distance between the side wall portion 22 and the side wall portion 22 is slightly longer than twice the width of the engaging protrusion 12.
That is, the cover member 2 is an engagement having a width slightly longer than twice the width of the engagement protrusion 12 by the cover main body portion 21 and the two side wall portions 22, and a depth substantially the same as the height of the engagement protrusion 12. A concave groove 23 is provided continuously in the longitudinal direction of the cover member 2.

  The sealing material 3a is formed of chloroprene foam, the thickness T satisfies H> DT, the width thereof is substantially the same as the upper surface of the engaging ridge 12, and the length thereof is the upper surface of the engaging ridge 12. It has a belt-like shape having the same length as the longitudinal dimension, and is fixed to the upper surface of the engaging protrusion 12 via an adhesive or a pressure-sensitive adhesive (including double-sided tape).

And this junction structure is constructed as follows.
(1) As shown in FIG. 1, using a crane or the like, one covering lid 1a is received by the peripheral portion of the pit 5 with the leg portions 13 provided at both ends in the longitudinal direction sandwiching the pit 5 respectively. The both ends in the longitudinal direction are fixed to the peripheral edge of the pit 5.
That is, the cover 1a is not shown, but, for example, fixing brackets such as angles are provided at both ends in the longitudinal direction, and the fixing brackets are bolted to the brackets anchored to the peripheral edge of the pit 5. By being fixed, it is fixed to the peripheral portion of the pit 5.
(2) A state where a gap is slightly formed at the joint portion between the adjacent cover 1a and the cover 1a previously fixed in the same manner (the maximum width of the two engagement protrusions 12 arranged facing each other is the engagement recess The width of the groove 23 is substantially the same as or slightly narrower.
(3) The sealing material 3a having the same width and length as the upper surface of the engaging ridge 12 is adhered and fixed along the upper surfaces of the engaging ridges 12 of the two cover lids 1a via an adhesive.
(4) Two engagement protrusions 12 arranged facing the cover member 2 are set so as to fit into the engagement grooves 23 as engagement portions, and the joint portion between the cover lid 1a and the cover lid 1a is set as the cover main body. Covered by part 21.
(5) Screw a plurality of screws 4 through the side wall portion 22 from the cover main body portion 21 of the cover member 2 at an equal pitch in the longitudinal direction, and to the middle position of the cover lid main body 11.
That is, the screw 3 is screwed in until the lower ends of the side wall portions 22 of both the cover lids 1a are in contact with the upper surface of the cover main body 11 adjacent to the engagement protrusion 12, so that the sealing material 3a is reliably compressed. Can stop water.
In this way, the two cover lids 1a are connected and fixed via the cover member 2.
At this time, since the cover member 2, the engagement protrusion 12, and the sealing material 3a satisfy H> DT, the sealing material 3a is compressed to a thickness of T- (DH). It will be in the state which was done, and the firm water stop state is obtained.
Then, the steps (2) to (5) are repeatedly performed so that the upper opening of the pit 5 is covered with the plurality of cover lids 1a.

As described above, this joining structure is provided with the engaging ridge 12, and rainwater that has fallen on the upper surface of the cover body 11, or a chemical liquid that has spilled on the upper surface of the cover body 11, does not get over the engagement ridge 12. It does not flow into the joint between the cover lid 1a and the cover lid 1a.
In addition, since the sealing material 3a is compressed between the upper surface of the engaging protrusion 12 and the cover main body 21, rainwater or chemicals never flows into the pit 5 through the joint between the cover lid 1a and the cover lid 1a. There is nothing.

Furthermore, since the cover member 2 is fixed to the cover lid 1a by a plurality of screws 4, even if a person gets on the cover lid 1a and a load is applied, the cover member 2 rises and is stopped by the sealing material 3a. Water is not impaired.
Further, the screw 4 is only screwed to an intermediate position in the thickness direction of the cover main body 11, that is, since it does not penetrate the cover main body 11, rainwater or a chemical solution flows into the pit 5 through the screw hole. There is never anything.

Furthermore, the cover 1a and the cover 1a are not provided with a structure in which the cover 1a is slid in the horizontal direction to be fitted, and the cover 1a can be installed by simply hanging the cover 1a with a crane or the like. Is good.
Moreover, since the structure of the cover 1a can be simplified, the manufacturing cost of the cover 1a is not so high.
In addition, the screw 4 may be tightened until the lower surface of the side wall portion 22 comes into contact with the upper surface of the cover body 11, so that excessive tightening of the screw 4 or insufficient tightening of the screw 4 can be easily prevented. .

FIG. 4 shows a second embodiment of the cover lid joining structure of the present invention, and FIG. 5 shows a state before the cover member is fixed.
As shown in FIGS. 4 and 5, in this joining structure, instead of the sealing material 3 a, a single sealing material 3 b having the same width as the bottom of the engaging groove 23 is formed in advance on the bottom of the engaging groove 23. Except for being bonded and fixed, it is the same as the first embodiment.

  In this joining structure, since only one sealing material 3b is bonded and fixed to the bottom of the engaging groove 23, the number of steps for bonding the sealing material 3b can be reduced as compared with the first embodiment. .

FIG. 6 shows a third embodiment of the cover lid joining structure of the present invention, and FIG. 7 shows a state before the cover member is fixed.
As shown in FIGS. 6 and 7, in this joining structure, the cover 1 b includes cover member receiving portions 14 on both sides of the cover main body 11 in the short direction.

The cover member receiving portion 14 is a rod-like material having a L-shaped cross section made of glass fiber reinforced foamed urethane resin (for example, Slon Neo Lumber FFU of Sekisui Chemical Co., Ltd.). It is formed by adhering and fixing to the upper surface of the cover body 11 so as to come to the edge side in the hand direction.
Further, the cover member receiving portion 14 has a first step portion 14b and an engagement ridge that is higher than the first step portion by a height H toward the lateral end edge of the cover main body 11 with respect to the cover main body 11. And a second step portion 14a.

  This joining structure is the same as that described above except that the cover member 2 is received on the upper surface of the first step portion 14b adjacent to the second step portion 14a serving as the engaging protrusion on the lower surface of the side wall portion 22. This is similar to the first embodiment.

  That is, according to this joining structure, the lower surface of the side wall portion 22 of the cover member 2 is received in a state in which the lower surface of the cover member 2 is in contact with the first step portion 14b that is one step higher than the cover body 11, and Further, it becomes more difficult for rainwater or chemicals to sneak into the second step portion 14a, which is the engaging protrusion.

FIG. 8 shows a fourth embodiment of the cover lid joining structure of the present invention, and FIG. 9 shows a state before the cover member is fixed.
As shown in FIGS. 8 and 9, in this joining structure, the cover 1 b includes cover member receiving portions 14 on both sides of the cover main body 11 in the short direction.

The cover member receiving portion 14 is a rod-like material having a L-shaped cross section made of glass fiber reinforced foamed urethane resin (for example, Slon Neo Lumber FFU of Sekisui Chemical Co., Ltd.). It is formed by adhering and fixing to the upper surface of the cover body 11 so as to come to the edge side in the hand direction.
Further, the cover member receiving portion 14 has a first step portion 14b and an engagement ridge that is higher than the first step portion by a height H toward the lateral end edge of the cover main body 11 with respect to the cover main body 11. And a second step portion 14a.

  This joining structure is the same as that described above except that the cover member 2 is received on the upper surface of the first step portion 14b adjacent to the second step portion 14a serving as the engaging protrusion on the lower surface of the side wall portion 22. This is similar to the second embodiment.

  That is, according to this joining structure, the lower surface of the side wall portion 22 of the cover member 2 is received in a state in which the lower surface of the cover member 2 is in contact with the first step portion 14b that is one step higher than the cover body 11, and Further, it becomes more difficult for rainwater or chemicals to sneak into the second step portion 14a, which is the engaging protrusion.

FIG. 10 shows a fifth embodiment of the cover lid joining structure of the present invention.
As shown in FIG. 10, in this joint structure, the cover body 15 of the cover 1c is not arch-shaped, but a top is provided at the center in the longitudinal direction, and a side-view mountain shape having a flat downward slope from the top. The process is the same as in the first embodiment except that

FIG. 11 shows a sixth embodiment of the cover lid joining structure of the present invention.
As shown in FIG. 11, in this joining structure, the cover 1 d is formed by the legs 13 from below into a one-flow state in which the upper surface of the cover body 16 is flat and descends from one side to the other in the longitudinal direction. Except being supported, it is the same as in the first embodiment.

  The present invention is not limited to the above embodiment. For example, in the above-described embodiment, the peak of the mountain shape is provided at the center in the longitudinal direction, but the peak portion of the peak may be shifted to one of the longitudinal directions to form inclined surfaces having different inclination angles.

1a, 1b, 1c, 1d Cover 11 Cover body 12 Engagement ridge 13 Leg 14 Cover member receiving portion 14a Second step (engagement ridge)
14b 1st step part 2 Cover member 21 Cover main-body part 22 Side frame part 23 Engagement groove 3a, 3b Sealing material 4 Screw 5 Pit

Claims (7)

A plurality of covers are respectively received from below at both ends in the longitudinal direction at the periphery of the pit, and are arranged side by side so that the side surfaces of the adjacent covers in the short direction almost face each other to cover the upper opening of the pit ,
It is a joining structure of the cover that covers the adjacent cover and the ends of the cover with a cover member via a sealing material from above,
The cover has an engaging protrusion with a height H protruding above the cover at the end in the short direction,
The cover member has a cover main body portion and side wall portions extending downward from both sides of the cover main body portion, and has a depth D that opens downward formed by the cover main body portion and both side wall portions. With an engaging groove of
The sealing material has a thickness T when there is no load, and
The height H, depth D, and thickness T satisfy H> DT,
Engagement protrusions of two adjacent cover lids are engaged in the engagement recesses of the cover member,
Bis or nails, the through the side wall portion through the upper surface of the cover member to the cover main body portion on opposite sides of the two engaging projections, driven into covering so that non-penetrating state covering lid, the implanted Both cover lids are connected and fixed by a cover member with a screw or a nail,
The sealing material is received on the upper surface of the engaging protrusions of the two adjacent cover covers, and between the bottom of the engagement groove of the cover member and the upper surfaces of the engagement protrusions of the two adjacent cover covers. Cover joint structure characterized by being compressed by The cover lid joining structure according to claim 1, wherein the screw or the nail is driven into the cover lid without penetrating the sealing material . The part adjacent to the engaging protrusion of the cover is stepped higher than the other part, and the engaging protrusion is further stepped higher than this step. The cover lid joining structure described. The cover cover joining structure according to any one of claims 1 to 3, wherein the cover member has the lower surfaces of both side walls of the engagement groove received at a portion adjacent to the engagement protrusion of the cover . The cover cover joining structure according to any one of claims 1 to 4 , wherein the cover body is formed in a side view mountain shape or an arch shape in which the cover body is lowered from the intermediate portion toward both sides in the longitudinal direction . The cover cover joining structure according to any one of claims 1 to 4 , wherein the cover body is formed in a single flow in which the cover body is lowered from one side in the longitudinal direction toward the other side . The cover and the cover member are obtained by processing a plate material made of fiber reinforced foamed polyurethane by at least one of lamination processing and cutting processing, and joining the cover according to any one of claims 1 to 6. Construction.

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