JP7181125B2 - Temporary floor equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a temporary floor device constructed on a grassy surface such as a stadium for sports, or on the ground such as a track or field of an athletics stadium.

For example, when a stadium for competitions or a track and field stadium is used as a venue for a large-scale event such as a concert, crowds such as spectators may walk or heavy machinery used to build the stage may run, causing damage to the ground. there is a problem to

In this case, in the case of a competition stadium with grass, the grass may be damaged. Further, in the case of a track and field stadium paved with pavement material such as Antuca (trademark), the pavement material may be damaged.

In order to protect the ground from such damage, the applicant has proposed a temporary floor system constructed by laying floor units vertically and horizontally on the ground, which has been well received.

JP 2016-199895 A Japanese Patent Application Laid-Open No. 2018-3381 Japanese Patent No. 4491435 Japanese Patent No. 4639220

A conventional temporary floor system (hereinafter referred to as "conventional system") proposed by the applicant of the present invention consists of rectangular plate-shaped floor units laid on the ground adjacent to each other vertically and horizontally, and the adjacent floor units are interconnected by connecting means. It is constructed by connecting it so that it can be detachably and vertically swingable.

The floor unit has side walls hanging downward from the perimeter of the floor wall forming a rectangular floor surface, and a bottom opening with a large number of ribs arranged in a grid pattern for supporting the floor wall from below. It is composed of a base body.

However, the floor unit may shift over the ground when large crowds or heavy vehicles or heavy machinery are running.

When the floor unit shifts, the lower edges of the side walls and ribs rub against the ground, creating a serious problem of scratching paving materials such as Antuca (trademark).

Therefore, the present inventors constructed a floor unit in which a bottom plate covering a lower opening is provided on a base body for paved ground or bare ground such as tracks and fields of track and field stadiums, and the lower surface of the bottom plate is placed on the ground. I learned that it is better to lay the pavement in a state where it is in surface contact with the surface, and this can prevent damage to the pavement material.

On the other hand, however, when a floor unit provided with such a bottom plate body is laid on the grass surface of a grass-grown sports stadium or the like, the lawn is subjected to surface pressure, causing the grass to wither, making it difficult to use a temporary floor device. Even after the dismantling and removal, the entire surface of the lawn is yellowed, so there is a serious problem that the stadium for competitions cannot be used for a while.

Therefore, the present inventor believes that it is not preferable to use the above-described bottom plate for the turf surface of a stadium, etc., and that it is preferable to lay the base body in a state where it is supported by line contact with the turf surface. Well, I learned that this can prevent grass withering.

Therefore, based on the above knowledge, the present invention selectively configures a ground unit suitable for the ground surface such as a track or field of a track and field stadium and a lawn unit suitable for a grass surface such as a stadium. There is a problem in providing a floor unit that can

In order to solve the above problems, the present invention provides a temporary floor system constructed by laying rectangular board-shaped floor units adjacent to each other vertically and horizontally on the ground, wherein the floor units are: a bottom opening-shaped base body in which a rib wall is protruded from the lower surface of a floor wall having a floor surface and a downward side wall is provided around the periphery; and the rib wall and the side wall of the base body are covered from below. It is composed of a detachably mounted bottom plate body, and can be selectively configured into a ground unit with the bottom plate body attached to the base body and a lawn unit with the bottom plate body removed from the base body, The ground unit is configured such that the lower surface of the bottom plate is laid on the ground in surface contact, and the lawn unit is constructed such that the rib wall and the lower end of the side wall of the base are laid in line contact with the lawn surface. The point is that it is configured to be

An embodiment of the present invention is provided with fitting means having fitting recesses and fitting projections for detachably fitting the side walls of bases of adjacent floor units to each other. In the structure in which the fitting means are pivotally connected by inserting and removing a connecting rod through the fitting recess and the fitting projection, the base body is positioned adjacent to the fitting recess from the floor wall. A receiving chamber having a recessed seat plate portion is formed, and the fixing board provided with the connecting rod is detachably fitted into the receiving chamber, and the fitting means is pivotally connected by sliding the connecting rod. a first fixing means for detachably fixing the fixing plate and the seat plate of the receiving chamber to each other; and the fixing plate and the bottom plate sandwiching the seat plate of the receiving chamber from above and below. A second securing means is provided for releasably securing the bodies to each other.

In a preferred embodiment, the seat plate of the receiving chamber of the base body forms a first section corresponding to the first fixing means and a second section corresponding to the second fixing means, and The first fixing means is composed of a first female screw means provided in the first section and a first bolt which is inserted through a fixing disc and screwed into the first female screw means, and the second fixing means is a second female screw means provided in the mounting portion of the bottom plate disposed below the second section, and a fixing disc and the second section are inserted and screwed into the second female screw means. It is configured by a second bolt that is

According to the present invention, the base body 5 constituting the floor unit 1 is formed in a lower opening shape with a rib wall 3 extending over the entire lower surface of the floor wall 2 and a side wall 4 extending downward. Therefore, even when the floor wall 2 receives a large load when a large number of people come and go, a heavy vehicle or a heavy machine runs, etc., it is possible to guarantee sufficient strength to withstand it.

In particular, the floor unit 1 can be selectively composed of a ground unit 1A suitable for the ground surface of a track or field of an athletics stadium and a lawn unit 1B suitable for a grass surface such as a stadium. , there is an effect that an appropriate temporary floor device can be constructed according to the site.

That is, since the ground unit 1A in which the bottom plate 6 is attached to the base 5 is constructed such that the lower surface of the bottom plate 6 is laid on the ground in a state of surface contact, it can be used on paved surfaces such as tracks and fields of track and field stadiums, as well as bare surfaces. Can protect the ground from scratches and other damage

Further, since the turf unit 1B in which the bottom plate 6 is removed from the base 5 is constructed such that the lower ends of the rib walls 3 and the side walls 4 of the base 5 are laid in line contact with the turf surface, the turf is subjected to surface pressure. It can be protected from causing turf wilt by receiving turf.

The present invention relates to a technique of constructing a temporary floor by pivotally connecting fitting means 13 of adjacent floor units 1 laid vertically and horizontally by connecting rods 14. 37 constitutes a rod unit, and only by fitting and fixing the rod unit in the receiving chamber 36 of the base body 5, the connection rod 14 can be appropriately assembled. By effectively utilizing , the attachment/detachment means for the bottom plate body 6 is configured, and this has the effect of being able to simply and easily selectively provide the ground unit 1A and the lawn unit 1B.

FIG. 4 is a perspective view of the floor unit of the present invention viewed from above with the base body and the bottom plate body disassembled; FIG. 3 is a perspective view of the floor unit of the present invention, viewed from below, with the base body and the bottom plate body disassembled; FIG. 10 is a perspective view of the portion provided with the peripheral fixing mechanism, viewed from above with the bottom plate body, the base body, and the fixing board disassembled; FIG. 4 is an exploded perspective view from below of side walls and rib walls of the base plate and fitting ribs of the bottom plate. FIG. 4 is a perspective view of the side walls and rib walls of the base body and the fitting ribs of the bottom plate body, viewed from below in a fitted state; FIG. 4 is a perspective view showing a fitting concave portion, a fitting convex portion, and a connecting rod in adjacent floor units; 1 is a perspective view showing a temporary floor system constructed by laying floor units vertically and horizontally adjacent to each other and connecting adjacent floor units; FIG. FIG. 4 is a perspective view showing an inner fixing mechanism for fixing the bottom plate to the base; Regarding the inner fixing mechanism, (A) is a perspective view showing a section of the fixing member, and (B) is a cross-sectional view showing a fixing state by the inner fixing mechanism. FIG. 5 is a perspective view showing the bottom plate body, the base body, the fixing board, and the locking member in an exploded state with respect to the peripheral fixing mechanism and the locking means of the corner portion; (A) is a perspective view showing an exploded state of the fixing disc and the connecting rod, and (B) is a perspective view showing a partial cross section of the fixing disc with the connecting rod inserted, with respect to the fixing disc constituting the peripheral fixing mechanism. and (C) a perspective view showing the lower surface of the fixing board. Regarding the peripheral fixing mechanism and the locking means of the corner portion, (A) is a perspective view showing the fixing board turned over with respect to the bottom plate and the base body and disassembled, and (B) is a method of holding the nut in the fixing holding means. and (C) is a partial cross-sectional perspective view showing a state in which the nut and the retainer are inserted into the fixing and holding means. Fig. 3 is a perspective view of a floor unit that constitutes the ground unit, viewed from above; FIG. 4 is a perspective view of a floor unit that constitutes the ground unit, viewed from below; Fig. 3 is a perspective view of a floor unit that constitutes the lawn unit, viewed from above; Fig. 3 is a perspective view of a floor unit that constitutes the lawn unit, viewed from below;

Preferred embodiments of the present invention will be described in detail below with reference to the drawings.

In the temporary floor system of the present invention, rectangular disc-shaped floor units 1 are laid on the ground adjacent to each other vertically and horizontally, and the adjacent floor units 1 are detachably and vertically swingable by mutual fitting means and connecting means. Constructed by connecting possible.

(floor unit)
As shown in FIGS. 1 and 2, the floor unit 1 is a base body having an opening at the bottom, in which a rib wall 3 protrudes from the lower surface of a floor wall 2 having a floor surface and downward side walls 4 are provided around the periphery. 5 and a bottom plate 6 detachably mounted so as to cover the rib wall 3 and side wall 4 of the base 5 from below.

At this time, the base body 5 and the bottom plate body 6 are integrally molded transparently (including semi-transparently) from a material having excellent flame resistance and heat resistance, such as a synthetic resin having excellent flame resistance and heat resistance such as polycarbonate. A closed space 7 is formed inside the floor unit 1 as shown in FIG.

In the case of the illustrated embodiment, the rib walls 3 of the base body 5 extend over the entire bottom surface of the floor wall 2 inside the side walls 4 in a state of intersecting like a honeycomb shape shown in the figure, thereby forming small mesh compartments. 8 are formed, and therefore the enclosed space 7 formed inside the floor unit 1 is composed of a large number of small compartments 8 .

As shown in FIG. 4, the bottom plate body 6 is positioned inside the peripheral edge of the base body 5 that abuts on the lower end of the side wall 4, and has fitting ribs 9 that are fitted along the inner peripheral surface of the side wall 4. On the other hand, the rib wall 3 of the base body 5 is formed with a notch groove 10 into which the fitting rib 9 is fitted. As can be seen from FIGS. 1 and 2, the side walls 4 of the base body 5 and the fitting ribs 9 of the bottom plate body 6 are provided continuously over their entire circumferences. Therefore, by inserting the fitting rib 9 into the notch groove 10, the fitting rib 9 is suitably fitted into the inner peripheral surface of the side wall 4, and seals the closed space 7 from the entire circumference.

In this state, it is preferable that the lower ends of the rib walls 3 of the base member 5 are brought into contact with the upper surface of the bottom plate member 6 so that the small compartments 8 are sealed.

(Fitting Means and Connecting Means)
The base body 5 has a fitting concave portion 11 and a fitting convex portion 12 for detachably fitting the side walls 4 of the adjacent base bodies 5, 5 when the floor units 1, 1 are laid side by side. The fitting means 13 is constituted by the fitting means 13, and the connecting means 15 is constituted by the connecting rod 14 which is pivotally connected by detachably penetrating the fitting concave portion 11 and the fitting convex portion 12 in the fitted state.

In the illustrated embodiment, fitting recesses 11 and fitting projections 12 are arranged side by side on side walls 4 forming each side of a rectangular base body 5 having four sides. 1 are arranged so that the fitting projections 12 of one substrate 5 can be fitted into the fitting recesses 11 of the other substrate 5 when arbitrary sides of the substrates 5 are opposed to each other.

The connecting rod 14 is made of opaque metal, is configured to move forward and backward from the corner of the base 5 toward the fitting recess 11, and has an L-shaped bent operation piece at its tail end. 14a. The connecting rod 14 is provided on a fixing plate, which will be described later, and the fixing plate, like the base body 5 and the bottom plate body 6, is made of synthetic resin such as polycarbonate having excellent flame resistance and heat resistance, and is transparent (translucent). included) are integrally molded.

Therefore, as shown in FIGS. 6 and 7, the fitting concave portion 11 and the fitting convex portion 12 are manually fitted between the base bodies 5 of the adjacent floor units 1, 1. When the connecting rod 14 is advanced, the connecting rod 14 is inserted through the through holes 11a and 12a formed in both the fitting concave portion 11 and the fitting convex portion 12, respectively, and pivotally connects them inseparably. As a result, the floor units 1, 1 are laid adjacent to each other vertically and horizontally while being connected to each other so as to be able to swing about the axis of the connecting rod 14. As shown in FIG.

At this time, while the base body 5, the bottom plate body 6, and the fixing board are all transparent, the connecting rods 14 are made of metal and are opaque. can be easily visualized to facilitate the laying work.

In this way, when constructing a temporary floor system by laying floor units 1 vertically and horizontally adjacent to each other, even if there is an uneven part on the laying surface (ground or lawn surface), the adjacent floor units 1, 1, the posture can be freely changed around the axis of the connecting rod 14, so that it can be laid in a posture adapted to the uneven place.

(Locking Means for Corner Part)
By the way, when the adjacent floor units 1, 1 are laid in an inclined position so that they fit freely in an uneven place as described above, the corners of the four base bodies 5 that are adjacent to each other in a butted state vertically and horizontally are tilted vertically and horizontally. It may be uneven. If such unevenness occurs, the sharp corners of the corners of any of the bases 5 will protrude upwards, causing spectators, etc. walking on the constructed temporary floor system to stumble and fall. There is a risk.

For this reason, the base body 5 is provided with locking means 16 for locking the corner portions that are adjacent to each other in the vertical and horizontal butting state.

The locking means 16 includes a locking member 17, an insertion space 18 for inserting the locking member 17 into the corner portion of the base body 5, and holding means 19 for holding the locking member 17 in the inserted state from above and below. It is composed of

As shown in FIG. 10, the locking member 17 is composed of a plate member with a mounting hole 20 penetrating through the center. forming.

On the other hand, the insertion space 18 at the corner of the base body 5 is provided with a corner pillar 22 projecting upward or downward (upward in the illustrated embodiment) along the corner of the corner. By inserting the fitting hole 20 of the locking member 17 into the corner post 22 from the projecting end, the locking portion 21 is inserted into the insertion space 18, and in this state, the end face of the corner post 22. The mounting hole 20 is prevented from escaping from the corner post 22 by overlapping a detachable cover means 23 on the corner post 22 . Accordingly, the mounting hole 20, the corner post 22, and the cover means 23 constitute a mounting means 24 which allows the locking member 17 to be mounted on the corner portion in a non-separable manner.

In the illustrated embodiment, the mounting hole 20 of the locking member 17 is formed by a circular hole having a predetermined inner diameter, and the corner post 22 is formed so that its cross-sectional shape is a sector occupying 1/4 of the circular hole. formed. Therefore, a total of four corner pillars 22 provided on the four base bodies 5 butted vertically and horizontally can be inserted into the mounting hole 20 of one locking member 17 . .

In the case of the illustrated embodiment, the cover means 23 is provided on a fixing disc, which will be described later. 19a and a lower holding portion 19b provided in the vicinity of the receiving chamber constitute a holding means 19 for holding the locking portion 21 in a sandwiched state from above and below.

As a result, the corners of the four substrates 5 that are adjacent to each other vertically and horizontally are regulated by the engaging means 16 and the holding means 19, and the upper and lower positions of the substrates 5 are aligned. never do.

(fixing mechanism)
The base body 5 and the bottom plate body 6 of the floor unit 1 are detachably fixed to each other by an inner fixing mechanism 25 arranged in the central part and a peripheral fixing mechanism 26 arranged in the peripheral part. It is

(inner fixation mechanism)
As shown in FIGS. 8 and 9, the inner fixing mechanism 25 includes a mounting wall 27 provided in the center of the bottom plate body 6, a fixing member 28 detachably fixed to the mounting wall 27, and the base body 5. and a fixing hole 30 passing through the floor wall 2 facing the holding wall. The base body 5 and the bottom plate body 6 are fixed to each other by screwing a bolt means 32 inserted through the fixing hole 30 into a female screw means 31 provided in the bottom plate.

In the illustrated embodiment, the mounting wall 27 is fitted into the small compartment 8 at the center of the base 5 and is formed by a hexagonal or other annular wall capable of freely receiving the holding wall 29 and the fixing member 28 . and a lateral hole 33 is provided.

The fixing member 28 is provided with a block body 34 which is movably inserted into the inner space of the mounting wall 27, and a pin means 35 which protrudes from the block body 34 and can be freely inserted into the horizontal hole 33. ing.

The female screw means 31 may be provided with a threaded hole in the block 34 of the fixing member 28, but in the illustrated embodiment, a nut 31a is fitted into a recess 34a formed in the bottom surface of the block 34, A through hole 34b communicating with the nut 31a is provided in the upper portion of the block body 34. As shown in FIG.

The fixing hole 30 is, as shown in the figure, a spot facing hole into which the head of the bolt means 32 is embedded. , 29a to fit and hold the block 34 of the fixing member 28. As shown in FIG.

Therefore, when the fixing member 28 having the female screw means 31 constructed by fitting the nut 31a into the recess 34a is inserted into the inner space of the mounting wall 27 and the pin means 35 is inserted into the horizontal hole 33, the above-mentioned A female thread means 31 (through hole 34b and nut 31a) is positioned at a predetermined position of the bottom plate body 6. As shown in FIG.

Next, the base plate 5 is placed over the bottom plate 6 from above, and the fitting ribs 9 of the bottom plate 6 are fitted along the inner surfaces of the side walls 4 of the base 5 as described above. 29a, 29a hold the block body 34 of the fixing member 28 from both sides.

In this state, the axial centers of the fixing hole 30 and the female screw means 31 are aligned with each other. The bodies 6 are fixed together.

(Peripheral fixing mechanism)
FIGS. 3-5 and 10-12 show the peripheral anchoring mechanism 26. FIG. The peripheral fixing mechanism 26 is detachably fitted in a receiving chamber 36 which is recessed from the floor wall 2 and which is located at a corner portion adjacent to the fitting recess 11 of the base body 5, and the upper side of the receiving chamber 36. It is composed of a fixing board 37 and a mounting portion 38 of the bottom plate body 6 which is detachably fitted under the receiving chamber 36 . A first fixing means 39 for fixing and a second fixing means 40 for detachably fixing the fixing board 37 and the bottom plate body 6 are constituted.

The receiving chamber 36 forms a space surrounded by L-shaped corner walls 41a and 41b forming corner portions of the base body 5 and an inner wall 4a extending from the inside of the fitting recess 11. seat plate portions 36a and 36b forming fitting spaces above and below, and the seat plate portion 36a on the side facing the fitting recess 11 forms a first section portion 42 corresponding to the first fixing means 39, A second section portion 43 corresponding to the second fixing means 40 is formed by the seat plate portion 36b positioned on the corner portion side.

In the illustrated embodiment, the inner side wall 4 a defining the receiving chamber 36 from the inside is formed by the side wall 4 of the base body 5 . Accordingly, the fitting rib 9 of the bottom plate body 6 is fitted along the inner surface of the inner wall 4a. The attachment portion 38 is constituted by a corner-shaped plate portion extending along the lower edges of 41a and 41b.

The corner walls 41a and 41b are located on both sides of the corners, and are formed by cutting off portions above the seat plate portion 36b to form the corner posts 22 described above. is attached. At this time, the fixing disk 37 fitted into the receiving chamber 36 has protrusions 44a and 44b which are fitted into the cut portions of the corner walls 41a and 41b, and the above-described cover means 23 is provided between the two protrusions. forming. Accordingly, as described above, when the fixing disc 37 is fitted into the receiving chamber 36 with the locking member 17 attached to the corner post 22 through the mounting hole 20, the locking member 17 has the protrusions 44a and 44b. The corner post 22 is sandwiched from above and below by an upper holding portion 19a formed by the lower end of the corner post 22 and a lower holding portion 19b formed by the bottom surface of the cut portion.

At this time, as shown in FIGS. 11 and 12, the fixing disc 37 has a stepped recess 45 formed on its lower surface for receiving the engaging member 17, and the seat plate portion 36b of the receiving chamber 36 and the stepped recess 45 are formed. The insertion space 18 for the locking member 17 described above is formed between the concave portions 45 .

(fixed board)
The fixing board 37 is fitted into the receiving chamber 36 and fixed by the first fixing means 39 to form a complementary floor surface 46 on the upper surface which is flush with the floor surface of the floor wall 2 . In the case of the illustrated embodiment, the floor surface of the floor wall 2 preferably constitutes anti-slip means by arranging a row of small rectangular protrusions having a trapezoidal cross section. It is preferable to arrange similar small projections in rows on the complementary floor surface 46 of the fixing board 37 as well.

The anchoring disc 37 provides a rod unit for mounting the connecting rod 14 . Furthermore, as will be described later, in order to configure a floor unit as a ground unit with the bottom plate 6 fixed and a floor unit as a lawn unit with the bottom plate 6 not fixed, if necessary. to provide an anchoring unit for

In order to provide the rod unit, as shown in FIG. 11(A), the upper surface of the fixing disc 37 is coaxially positioned with the through holes 11a and 12a of the fitting concave portion and the fitting convex portion of the base body 5. A slide groove 47 is provided, and storage grooves 48a and 48b extending in the form of branch grooves are provided in a state of being bent in an L shape from both ends of the slide groove 47. As shown in FIG. A passage 47a is provided through the fixing board 37 from the slide groove 47 toward the through holes 11a and 12a.

The connecting rod 14 is slidably fitted into the slide groove 47 over a projection 49 projecting from the groove wall of the slide groove 47, and rotates about its axis to move the operation piece 14a into the storage groove. 48a, 48b can be fitted.

As shown in FIG. 11(B), when the operation piece 14a is fitted into the storage groove 48a over the protrusion 50a protruding from the groove wall of the storage groove 48a, the connecting rod 14 moves the tip end of the passage 47a. It is held in a non-slidable state while being positioned inside the .

From this state, the operating piece 14a of the connecting rod 14 is pulled out above the storage groove 48a and slid along the slide groove 47. As indicated by the chain line, the distal end of the connecting rod 14 is inserted from the passage 47a. By penetrating the through holes 11a and 12a of the fitting concave portion 11 and the fitting convex portion 12, they are configured to be pivotally connected. In this state, the connecting rod 14 can be held non-slidably by moving the operation piece 14a over the projection 50b projecting from the groove wall of the storage groove 48b and fitting it into the storage groove 48b.

As in the illustrated embodiment, if the rod unit equipped with the connecting rod 14 is configured by the fixing disc 37, when the fixing disc 37 is fitted into the receiving chamber 36 and fixed by the first fixing means 39, the connecting rod can be immediately attached. 14 can be securely attached to the fitting concave portion 11 and the fitting convex portion 12 at locations corresponding to the through holes 11a and 12a, which has the advantage of facilitating the attachment work.

(First fixing means)
As shown in FIGS. 3, 10 and 12, the first fixing means 39 includes a first female screw means 51 provided on the seat plate portion 36a forming the first section 42 of the receiving chamber 36, and a fixing board. It is composed of a headed first bolt 53 which is inserted through a first hole 52 of 37 and screwed into the first female screw means 51 .

The first female screw means 51 may be integrally formed with a block provided with a threaded hole in the seat plate portion 36a of the first section 42, but as in the illustrated embodiment, it is integrally formed with the seat plate portion 36a. Preferably, the nut 51a is inserted into the fixed holding means 54 and fixed and held.

As shown in FIG. 12, the fixing and holding means 54 is formed by a pedestal portion 56 having a hollow portion 55 on its lower side. The hollow portion 55 penetrates the corner wall 41a and opens to the side surface.

The hollow portion 55 is formed so that the width of the hollow portion 55 becomes gradually narrower from the opening toward the inside. Both sides are clamped at the position where they are held, and fixed and held in a detent state.

In this state, the retainer 59 is fitted into the rectangular hole 58 . The retainer 59 is composed of a substantially U-shaped plate spring having legs 59b, 59b bent from both side edges of a plate portion 59a facing the nut 51a. The distance between the ends of the legs 59b, 59b is set to a width w2 larger than the inner dimension of the rectangular hole 58. As shown in FIG. Therefore, when the retainer 59 is inserted into the square hole 58 and released from the fingertips, the legs 59b and 59b are restored. is held in elastic contact with the inner peripheral edge of the rectangular hole 58 by the .

With the nut 51a held by the fixing and holding means 54 as described above, the fixing board 37 is fitted into the receiving chamber 36, the first bolt 53 is inserted into the first fixing hole 52 of the fixing board 37, and the through hole is inserted. The fixing board 37 and the base body 5 are fixed by the first fixing means 39 by screwing from 57 to the nut 51a.

(Second fixing means)
The second fixing means 40 includes a second female screw means 60 provided in the mounting portion 38 of the bottom plate body 6 arranged below the second section portion 43, a second fixing hole 61 of the fixing board 37 and a second It is composed of a headed second bolt 63 which is inserted through a through hole 62 of the second section 43 and screwed into the second female screw means 60 .

The second female screw means 60 may be formed integrally with a block provided with a threaded hole in the mounting portion 38, but as in the illustrated embodiment, a nut is attached to the fixing holding means 64 integrally formed with the mounting portion 38. Preferably, 60a is inserted and fixedly held.

Since the specific configuration of the fixing holding means 64 is the same as the configuration of the fixing holding means 54 in the first fixing means 39 described above with reference to FIGS. Therefore, redundant description is omitted.

The attachment portion 33 of the bottom plate body 6 includes a first rib group 65 made up of a plurality of ribs fitted and fixed to the lower side of the first section portion 42 of the receiving chamber 36 and the second section portion 43 which is fitted and fixed to the lower side. Preferably, a second set of ribs 66 is provided, consisting of a plurality of ribs that are aligned, and are configured to be fitted in a tight fit, as shown in FIGS.

With the nut 60a held by the fixed holding means 64 as described above, the bottom plate 6 is arranged below the base 5, the fitting rib 9 is fitted inside the side walls 4 and 4a, and the second After the first rib group 65 and the second rib group 66 are fitted in the lower spaces of the first section 42 and the second section 43 respectively, the second fixing hole 61 of the fixing disc 37 fitted in the receiving chamber 36 is inserted into the second fixing hole 61 . 2. By inserting the bolt 63 and screwing the bolt shaft part inserted through the through hole 62 into the nut 60a from the through hole 57 of the fixing holding means 64, the fixing board 37 and the bottom plate body 6 are fixed by the second fixing means 40. is done.

(ground unit and lawn unit)
The floor unit 1 can be provided as a ground unit 1A as shown in FIGS. , can be provided as a lawn unit 1B as shown in FIGS.

The ground unit 1A is suitable for constructing a temporary floor device on paved ground or bare ground such as tracks and fields of track and field stadiums, and is configured such that the lower surface of the bottom plate body 6 is laid on the ground in a state of surface contact. Therefore, paved ground and bare ground can be protected from damage such as scratches.

On the other hand, the lawn unit 1B is suitable for constructing a temporary floor device on the lawn of a stadium or the like, and the lower ends of the rib walls 3 and side walls 4 of the base body 5 are in line contact with the lawn surface. Since the structure is such that the grass is laid in a state, it is possible to protect the lawn from withering due to contact pressure.

The floor unit 1 provided by the present applicant has a configuration in which a temporary floor is constructed by pivotally connecting the fitting means 13 of the adjacent base bodies 5 laid vertically and horizontally by connecting rods 14. The connecting rod 14 can be properly assembled simply by fitting and fixing the rod unit constituted by the fixing board 37 to the receiving chamber 36 of the base body 5. By effectively utilizing the fixing board 37, the attaching/detaching means of the bottom plate body 6 is constituted, so that the ground unit 1A and the lawn unit 1B can be selectively constructed simply and easily, resulting in a complicated structure. There is no need to provide a separate mechanism.

(Action of floor unit)
In both the ground unit 1A and the lawn unit 1B, the base body 5 constituting the floor unit 1 has a rib wall 3 protruding from the bottom surface of the floor wall 2 and a side wall 4 facing downward. Since it is formed in a peripheral lower opening, it is possible to ensure sufficient strength to withstand even when the floor wall 2 is subjected to a large load when a large number of people come and go, heavy vehicles or heavy machines run, or the like. .

The floor unit 1 is pivotally connected by the fitting means 13 and the connecting means 15 so that when constructing a temporary floor device while being laid vertically and horizontally adjacent to each other, the four base bodies are vertically and horizontally buttedly adjacent to each other. The corner portion at 5 is regulated by locking means 16 and holding means 19, and is laid in a state in which the upper and lower positions are preferably aligned.

Since the floor unit 1 is made of a flame-retardant and heat-resistant resin material, it does not easily burn due to some kind of ignition source such as fire, and is excellent in fire prevention. Moreover, even when heated under the scorching heat of midsummer, there is no risk of distortion due to thermal deformation.

Generally, the oxygen index is used as an index for the combustion temperature of plastics. These are said to be "flame-retardant". For example, polypropylene has an oxygen index of 18-19 and is classified as “combustible”, while polycarbonate has an oxygen index of 24-25 and is classified as “flame-retardant”.

The heat resistance temperature (thermal deformation temperature) of plastics is determined by raising the temperature under a predetermined load and obtaining the temperature at which the deformation exceeds a certain level. Polycarbonate is said to have a heat distortion temperature of 129 to 140 degrees (C), compared to 77 degrees (C).

Therefore, in the present invention, it is preferable to use, as the plastic for molding the floor unit, a resin material excellent in flame retardancy and heat resistance, such as polycarbonate, which has a higher combustion temperature and heat distortion temperature than polypropylene.

By the way, the main purpose of the ground unit 1A, in which the base plate 6 is attached to the base 5, is not to be laid on the lawn. It is also possible to construct, and this is not denied.

When laid on the lawn, the unit 1A to which the bottom plate 6 is attached forms a closed space 7 inside, so that the closed space 7 forms a heat insulating layer between the base 5 and the bottom plate 6. , to prevent the bottom plate body 6 from becoming hot. Therefore, when a temporary floor device is constructed by laying on the lawn surface of the lawn, even when the floor wall 2 of the base body 5 becomes hot, the temperature of the bottom plate 6 in contact with the lawn is prevented as much as possible. By protecting the lawn, it is possible to prevent the lawn from withering.

Since the unit 1A is brought in disassembled to a site where the floor system is temporarily installed, and assembled by attaching the bottom plate 6 to the base body 5 at the site, dust may accidentally enter the interior during assembly. Although there is a risk that flammable unnecessary objects such as paper and pieces of cloth may be left behind, by forming the closed space 7 inside which is hardly communicated with the outside air as described above, the leftover objects can be prevented from becoming extremely hot. Even if it is exposed, it will not catch fire and can ensure safety.

In this regard, the rib wall 3 of the base body 5 is formed with a notch groove 10 so that the fitting rib 9 of the bottom plate body 6 fits along the inner peripheral surface of the side wall 4 of the base body 5 . Thus, the airtightness of the airtight space 7 is ensured.

Further, if the base body 5 and the bottom plate body 6 are transparent (including translucent) and integrally molded, it is possible to visually check whether unnecessary objects are left inside, which is preferable. Moreover, when constructing a temporary floor device by laying it on the lawn surface of the lawn, both the unit 1A and the unit 1B have the advantage that the sunlight can pass through the unit and irradiate the lawn.

Furthermore, if a large number of small compartments 8 are formed by the rib walls 3 on the lower surface of the floor wall 2 of the base body 5 to form a sealed space 7, it is possible to prevent large unnecessary objects from being left inside. can do.

1 Floor unit 1A Ground unit 1B Turf unit 2 Floor wall 3 Rib wall 4 Side wall 4a Inner wall 5 Base body 6 Bottom plate body 7 Closed space 8 Small compartment 9 Fitting rib 10 Notch groove 11 Fitting recess 12 Fitting convex Parts 11a, 12a Through hole 13 Fitting means 14 Connecting rod 15 Connecting means 16 Locking means 17 Locking member 18 Insertion space 19 Holding means 19a Upper holding part 19b Lower holding part 20 Mounting hole 21 Locking part 22 Corner post 23 Cover Means 24 Mounting Means 25 Inner Fixing Mechanism 26 Peripheral Fixing Mechanism 27 Mounting Wall 28 Fixing Member 29 Holding Wall 29a Parallel Wall 30 Fixing Hole 31 Female Thread Means 31a Nut 32 Bolt Means 33 Horizontal Hole 34 Block 34a Concave 34b Passing Hole 35 Pin means 36 Receiving chambers 36a, 36b Seat plate portion 37 Fixing disc 38 Mounting portion 39 First fixing means 40 Second fixing means 41a, 41b Corner wall 42 First section 43 Second section 44a, 44b Projection 45 Step shaped recess 46 complementary floor surface 47 slide groove 47a passages 48a, 48b storage groove 49 projections 50a, 50b projection 51 first female screw means 51a nut 52 first fixing hole 53 first bolt 54 fixing and holding means 55 hollow portion 56 pedestal portion 57 Through hole 58 Square hole 59 Retainer 59a Plate portion 59b Leg portion 60 Second female screw means 60a Nut 61 Second fixing hole 62 Through hole 63 Second bolt 64 Fixing and holding means 65 First rib group 66 Second rib group

Claims (3)

Temporary floor equipment constructed by laying rectangular board-shaped floor units adjacent to each other vertically and horizontally on the ground,
The floor unit includes a base body (5) having a lower opening, with a rib wall (3) protruding from the lower surface of a floor wall (2) having a floor surface and downward side walls (4) surrounding the base body (5); The ground unit (6) is detachably attached so as to cover the rib walls and side walls of the base body from below, and the base plate (5) is attached to the base plate (6). 1A) and a lawn unit (1B) obtained by removing the bottom plate (6) from the base body (5) can be selectively configured,
The ground unit (1A) is configured such that the lower surface of the bottom plate (6) can be laid on the ground in surface contact,
The lawn unit (1B) is constructed so that the lower ends of the rib wall (3) and the side wall (4) of the base body (5) are laid on the lawn surface in a line contact state. floor equipment. A fitting means (13) having a fitting concave portion (11) and a fitting convex portion (12) for detachably fitting the side walls (4) of the base bodies (6) of the adjacent floor units is provided. and in which the fitting means (13) is pivotally connected by detachably inserting a connecting rod through the fitting concave portion and the fitting convex portion in the fitted state,
The base body (5) forms a receiving chamber (36) having seat plate portions (36a, 36b) recessed from the floor wall adjacent to the fitting recess (11). The fixing board (37) provided with the rod (14) is removably fitted, and the fitting means (13) is pivotally connected by sliding the connecting rod (14),
A first fixing means (39) for detachably fixing the fixing board (37) and the seat plate portion (36a) of the receiving chamber to each other and the seat plate portion (36b) of the receiving chamber are sandwiched from above and below. 2. A temporary floor system according to claim 1, further comprising second fixing means (40) for detachably fixing the fixing plate (37) and the bottom plate (6) to each other. The seat plate portion of the receiving chamber (36) of the base (5) includes a first section (42) corresponding to the first fixing means (39) and a second section corresponding to the second fixing means (40). It forms 2 districts (43),
The first fixing means (39) includes a first female thread means (51) provided in the first section (42), and a first female screw means (51) inserted through a fixing disc and screwed into the first female thread means. Consists of bolts (53),
The second fixing means (40) comprises a second female screw means (60) provided in the mounting portion (38) of the bottom plate (6) arranged below the second section (43); 3. A temporary floor system according to claim 2, comprising a fixing plate and a second bolt (63) which passes through the second section and is screwed into the second female screw means.

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