JP2885071B2 - Lawn pallets - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet in which natural grass is used to replace natural grass and artificial grass, and more particularly to a method in which a plurality of pallets connected to a grass pallet group are adjacent to each other without gaps. Lawn pallets.

[0002]

2. Description of the Related Art For example, when playing soccer in a multipurpose dome for baseball, soccer, and various events, it is necessary to replace artificial grass used for example in baseball with natural grass. This replacement
This is done by moving a natural lawn that has been grown outside in advance into a multipurpose dome. Conventionally, a large number of natural lawns cut to a predetermined size were laid on the site, or natural grass was grown on a layer formed of a few centimeters thick on a bark of wood. A method has been proposed in which a carpet is wound and moved from a breeding ground like a carpet, and the carpet is rewound to spread the carpet.

[0003]

However, moving and transporting the natural lawn from the growing area is complicated. For example, if the natural lawn is loaded on a transport truck at a very early stage, the natural lawn may die or rot. is there. In addition, if natural turf is laid on the breeding ground so that it will not wither or rot, it will be difficult to replace it by the scheduled time. For these reasons, the work of replacing artificial grass with natural grass must be performed in a short time.

[0004] For this reason, it is conceivable to replace artificial grass with natural grass by laying pallets vegetated with natural grass, but the number of pallets increases, and handling of pallets becomes troublesome. In particular, for example, in a multipurpose dome in which baseball and soccer are alternately performed, the laying work and the unloading work must be performed alternately and frequently, and the work becomes extremely troublesome. Therefore, it is conceivable to form a lawn pallet group while connecting a predetermined number of pallets.

[0005] However, it is difficult to make the grass pallet groups thus constructed adjacent to each other without gaps. That is, for example, it is necessary to make the sides of the lawn pallet group having a quadrangle as a whole be adjacent to each other without any gap. However, when a minute gap is generated between the sides, the lawn pallet group is composed of a plurality of pallets. , It is extremely difficult to eliminate the gap by human power or the like.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a lawn pallet group capable of adjoining a plurality of lawn pallet groups formed by connecting a plurality of pallets without gaps therebetween. The purpose is to provide.

[0007]

SUMMARY OF THE INVENTION In order to solve the above objects, the present invention provides a pallet in which natural grass is vegetated, a sheet arranged below a plurality of pallets connected to each other, and a longitudinal direction of the sheet. And a pair of wires curved in the width direction of the sheet and arranged in an arc shape from end to end.

[0008]

According to the present invention, when both ends of one of the pair of wires arranged on the sheet are pulled, a force acts on the lawn pallet group in the width direction of the sheet from the wire, and the lawn pallet group moves.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
1 will be described. As shown in FIG. 1, the multipurpose dome 1 of this embodiment has a roof 3 made of a translucent Teflon film. The inside has a site 5 in the center where sports competitions such as soccer and the like or other events can be performed, and a spectator seat 7 is provided around the site.

As shown in FIG. 2, an artificial turf or a natural lawn 9 is laid on the site 5 in accordance with the type of a competition or an event to be performed on the site 5. The size of this site is, for example, about 70 meters in width W and about 120 meters in length L. The natural lawn 9 spread on this site 5
It is divided into a total of ten lawn pallet groups 11.

Each lawn pallet group 11 has, for example, a width w of 1
It is about 0 to 20 meters, and the length s is about 40 to 60 meters.

Each of the lawn pallet groups 11 is constituted by connecting a plurality of lawn pallets 13 as shown in FIGS. Each lawn pallet 13 has a size of, for example, about 1.0 m × 1.0 m.

As shown in FIG. 3, each lawn pallet group 11
Is pulled by a towing vehicle 15 via a wire 17. The towing vehicle 15 is equipped with a pressure feeding device 21 such as a compressor for feeding compressed air below a sheet 19 (see FIGS. 4 and 5) disposed below the lawn pallet group 11. The pressure-feeding device 21 has a cloth-made air duct 23, and the air duct 23 is arranged along the widthwise central position of the lawn pallet group 11 having a square shape as a whole in the longitudinal direction over substantially the entire length. Since the air duct 23 is made of cloth, the air duct 23 is crushed and flat when compressed air is not fed, and the thickness becomes extremely thin. The ventilation duct 23 has a large number of holes formed on the side surface thereof.
5 is evenly supplied to the entire lower surface of the sheet 19.

The sheet 19 is made of, for example, cloth and has a large size.
It consists of a single piece and prevents compressed air from leaking to the outside. That is, as shown in FIG. 4 and FIG. Are linked. Thus, when the compressed air is supplied, the skirt portion expands, so that the compressed air hardly escapes to the outside.

The lawn pallet 13 is a two-layer pallet. That is, a holding portion 35 for holding the natural grass 29 and the earth and sand 33 supporting the root portion 31 of the natural grass 29 or a material replacing the sand, and a lower portion of the holding portion 35, that is, a bottom portion of the grass pallet 13. And a cavity 37. A sponge 41 serving as a water absorbing material is put into the hollow portion 37 together with the water 39. Water 39 is sponge 4
1 and the remaining portion is stored on the sponge 41. The support plate 43 supporting the earth and sand 33 has holes 4
5 is formed, and a water pumping material 47 made of cloth is passed through the hole 45 to constitute a water pumping section 49. The lower end of the pumping material 47 is inserted into the sponge 41, and the upper end is inserted into the earth and sand 33 of the natural lawn 29. As a result, the cavity 37 through the pumping material 47
Is supplied to the natural lawn 29 by capillary action.
Further, since the air layer 50 is formed under the support plate 43, the air layer 50 functions to prevent root rot of the natural lawn 29 and the like.

A water guide material 51 is passed to the adjacent grass pallet 13. That is, the water guide material 51 made of cloth is passed from the hollow portion 37 of one lawn pallet 13 to the hollow portion 37 of the adjacent lawn pallet 13 through the respective holes 53. Both ends of the water guide material 41 are inserted into the sponges 41 of the respective lawn pallets 13, and water is guided from the lawn pallets 13 in which water remains to the lawn pallets 13 in which the accumulated water has been reduced due to capillary action. .

Adjacent lawn pallets 13 are connected by bolts and nuts 57. This bolt and nut 5
7 is connected with a certain play in the longitudinal direction,
As will be described later, each grass pallet 13 can change its mutual attitude to some extent.

As shown in FIGS. 3 and 9, the lawn pallet group 11 has a rectangular shape as a whole, and is curved in the width direction of the sheet 19 from a corner at a longitudinal end of the square to another corner. Then, a pair of wires 59 are arranged in an arc shape. The two wires 59 are arranged in a state of crossing in a substantially X-shape with the directions of the arcs reversed. Each wire 5
9 has a metal fitting 6 for pulling the wire 59.
1 is attached. With this metal fitting 61, the wire 5
In order to pull the wire 9, a winch 62 for winding the wire 59 may be provided, or the wire 59 may be pulled by the towing vehicle 15 irrespective of the winch 62.

Each lawn pallet 13 is provided with four legs 13A (see FIGS. 6 and 10) at four corners so that the lawn pallet 13 does not climb on the wire 59. A wire 59 is provided between the legs 13A.

The wire 59 passes through a wire passage 19A provided on the upper surface of the sheet 19 (see FIG. 10). The wire passage 19A is made of cloth and forms a so-called double part of the sheet 19. The center of the wire 59 is the lawn pallet group 11
To the center of However, the fixing to the lawn pallet group 11 may be performed not only at the central portion but also at a plurality of positions in the longitudinal direction of the wire 59.

Next, as shown in FIG. 8, a storage shelf 63 is used to store the lawn pallet group 11. That is,
The storage shelves 63 are provided in a plurality of stages, and each of the storage shelves 63 has an area capable of storing one lawn pallet group 11 (see FIG. 3) or a plurality of lawn pallet groups 11.
These storage shelves 63 are provided with an inclined plate 67 whose angle can be freely changed by an elevating device 65 and a belt conveyor 71 whose height can be freely changed by another elevating device 69. Engaging portions 75 with which the wires 73 are engaged are provided at predetermined intervals on the surface of the belt conveyor 71. The grass pallet group 11 can be pulled up by the wire 73 engaged with the engaging portion 75 and stored in the storage shelf 63.

The operation of this embodiment will be described below. In the multipurpose dome 1 of this embodiment (see FIG. 1), since the roof 3 is made of a Teflon film and has translucency, even when the natural lawn 9 is laid inside the multipurpose dome 1,
A certain amount of sunshine is obtained, which is suitable for preserving the natural lawn 9.

For example, when the soccer game is over and the natural grass 9 is replaced with artificial grass, a towing vehicle 15 (see FIG. 3) is used to move each grass pallet group 11 (see FIG. 3) from the site 5 of the multipurpose dome 1. 2)). At this time, the compressed air 25 is sent below the seat 19 through the air duct 23 by the pressure feeding device 21 mounted on the towing vehicle 15. As a result, the skirt around the sheet 19 expands in response to the wind (see FIGS. 4 and 5). Ventilation duct 2
3 also swells to a substantially circular cross section by compressed air. Compressed air 25
The grass pallet group 11 floats through the sheet 19 because it is difficult to escape to the outside by the skirt.

By this floating, the friction of the lawn pallet group 11 with the site 5 is reduced. Therefore, the towing vehicle 15 can perform towing with a small force. After towing and transporting the grass pallet group 11 near the storage shelf 63 (see FIG. 8) (see FIG. 8A), the towing vehicle 15 once removes the wire 17. Although the wire 17 is removed, the air duct 2
3 is left as it is, and the compressed air is continuously sent. In this state, another long wire 73 is engaged with the engaging portion 75 of the lawn pallet group 11 and the belt conveyor 71. When the belt conveyor 71 is rotated counterclockwise in the drawing, the lawn pallet group 11 is pulled up the inclined plate 67 by the wire 73. The tip of the lawn pallet group 11 is a belt conveyor 71
When the wire 73 is reached to the left end in the figure, the wire 73 is re-wrapped to a deeper position (a position closer to the right in the figure) of the lawn pallet group 11. The engagement of the wire 73 with the belt conveyor 71 is also performed with another engagement portion 75. When the belt conveyor 71 is rotated in this way, the grass pallet group 11 can be further pulled up. Thus, the lawn pallet group 11
Can be stored in the storage shelf 63. When the storage in the storage shelf 63 of one stage is completed, the elevating devices 65 and 69 are moved up and down to perform storage in another stage.

Next, for example, when a soccer competition is again held, the grass pallet group 11 is pulled out from the storage shelf 63, moved and transported, and replaced with artificial turf. At this time, as shown in FIG. 8B, each lawn pallet group 1
Pull out one. At this time, since the belt conveyor 71 is unnecessary, it is removed.

As described above, when the grass pallet group 11 is pulled up or pulled out from the storage shelf 63,
At the border between the slope plate 67 and the slope plate 67 or the border between the slope plate 67 and the site 5, the lawn pallet group 11 bends. In this bent portion, as shown in FIG.
Crack 77 enters the part (see FIG. 7B),
Alternatively, the earth and sand 33 is pushed to form a swell 79 (see FIG. 7C). Such bending is well tolerated because the bolt nut 57 connects the lawn pallet 13 with a certain play. In addition, the crack 77 and the swell 79 are on the lawn pallet group 11 on the site 5.
When it is placed on a flat surface, it returns to its original state. By any chance
Even if some cracks 77 and swells 79 remain, it can be easily restored by performing the leveling.

When the lawn pallet groups 11 thus drawn out are laid next to each other, a gap 80 may be formed between them (see FIG. 9). This gap 80
It is difficult to manually correct this. That is, the lawn pallet group 11 is formed by connecting a plurality of lawn pallets 13. Even if the lawn pallet 13 on the side facing the gap 80 is moved, the lawn pallet 13 is connected to the lawn pallet 13. Lawn pallet 13 does not allow movement,
After all, many lawn pallets 13 must be moved at the same time, and it is difficult to correct the lawn pallets 13 manually.

On the other hand, in this embodiment, both ends of one wire 59 of a pair of wires 59 which are curved in the width direction of the sheet 19 and arranged in an arc shape between the ends of the sheet 19 are connected to the metal fittings 6.
1 and pulled by winch 62. The sheet 1 is pulled from the wire 59 to the lawn pallet group 11 by pulling.
9, a force 81 acts in the width direction. That is, the arc-shaped wire 59
Move in the direction in which it is going to extend straight, and the lawn pallet group 11 applies a force 81 from the wire 59 toward the inside of the arc.
In response, the grass pallet group 11 moves in a direction to close the gap 80. Thereby, the gap 80 can be easily corrected. In the case where a reverse force is applied to the lawn pallet group 11 to move in the reverse direction, the two wires 5
The other wire 59 out of 9 may be pulled. These correction operations are also performed while sending compressed air. That is, from the pressure feeding device 21 mounted on the towing vehicle 15 to the blowing duct 23
If the correction is performed while sending the compressed air under the sheet 19 via the sheet 5 (see FIG. 3), the correction can be performed while the friction between the lawn pallet group 11 and the site 5 is reduced.
The force for pulling 9 is small. As described above, according to this embodiment, the gap 80 formed between the lawn pallet groups 11 can be easily corrected by pulling both ends of the wire 59 with the winch 62. Therefore, the work of making the lawn pallet groups 11 adjacent to each other without the gap 80 can be easily performed.

Also, by sending compressed air under the sheet 19, the lawn pallet group 11 constituted by connecting a large number of lawn pallets 13 is lifted, and can be moved and transported by pulling with a small force. Therefore, each lawn pallet 13
Moving and transporting work can be performed much more quickly than moving and transporting one sheet at a time.

Further, since the friction between the lawn pallet group 11 and the site 5 can be reduced by sending compressed air, and the force required for towing can be reduced, the towing vehicle 15 can be prevented from becoming large and the work cost can be reduced. be able to.

After moving and transporting, the sheet 1
Since the sheet 9 and the air duct 23 are folded and the thickness thereof is reduced, the lawn pallet group 11 can be spread or stored while leaving the sheet 19 and the air duct 23 as they are. Therefore, at the time of the next moving / transporting operation or the replacement operation, the operation can be started as it is. Therefore, the work is easily performed.

The water 39 stored at the bottom of each lawn pallet 13 is held by the sponge 41 and is not easily spilled. For this reason, work can be performed without worrying about spillage of the water 39, and work is facilitated.

Further, the water 39 can be reliably supplied to the natural grass 29 by the function of the pumping section 49. In addition, by the function of the water guide material 51, it is possible to eliminate the irrationality that a large amount of water 39 remains in other lawn pallets 13 even though the natural lawn 29 of some lawn pallets 13 has died due to lack of water. . In other words, if the water 39 remains on any of the lawn pallets 13, the natural lawn 29 of any of the lawn pallets 13 can be prevented from withering.

When the grass pallet group 11 is stored in the storage shelf 63, the wires 73 are moved by the belt conveyor 71.
, The grass pallet group 11 is pulled up and stored, so that the dimension between the storage shelves 63 can be sufficiently reduced. That is, it is sufficient that this dimension is equivalent to the thickness of the lawn pallet group 11. For this reason, it is possible to provide a large number of storage shelves 63 in a small space.

Further, since the storage shelf 63 is three-dimensional and can be well ventilated, the natural lawn 29 can be stored without damaging the natural lawn 29, for example, for about one week without much sunshine. In the above embodiment, the water pumping section 49 of the lawn pallet 13 has the water pumping material 47 made of cloth. In other embodiments, as shown in FIG.
7 and simply the hollow portion 37 and the earth and sand 33 of the natural lawn 29
May be partially contacted via a hole 83 formed in the side wall of the hollow portion 37 or the like. Also,
Instead of forming the large holes 83, the top wall and side walls of the cavity 37 may be formed of a water-permeable material.

Further, in the above embodiment, the water guiding material 51 for guiding water from one side of the lawn pallet 13 to the other is provided. However, in other embodiments, it is not always necessary to provide the water guiding material 51, as shown in FIG. It may not be provided at all.

In the above embodiment, the sponge 41 is used as the moisture absorbing material. However, in other embodiments, any material that contains water, such as a water-absorbing polymer, may be used in the present invention. be able to.

In the above embodiment, the air duct 2
Although only one number 3 is provided, the number is not limited to one in other embodiments, and a plurality of numbers 3 can be provided. For example, not only the air duct 23 passing through the center of the grass pallet group 11 but also a dedicated air duct for supplying compressed air to the surrounding skirt may be provided.

In the above embodiment, the wire 73 for storing the lawn pallet group 11 is engaged with the engaging portion 75 provided on the belt conveyor 71, and the lawn pallet group 11 is pulled up. However, in another embodiment, the lawn pallet group 11 may be pulled up by winding the wire 73 by a winch without using the belt conveyor 71, for example.

In the above-described embodiment, the arc-shaped wire 59 arranged to eliminate the gap 80 between the lawn pallet groups 11 is fixed only partially to the sheet 19. In this embodiment, the sheet 19 may be fixed at all portions in the longitudinal direction. Even if all the portions are fixed, the grass pallet group 11 can be moved by pulling both ends of the wire 59, whereby the gap 80 can be corrected.

[0041]

As described above, according to the present invention, one of the pair of wires disposed on the seat is required.
By pulling both ends of the book wire, a force acts toward the inside of the arc of the wire and the lawn pallet group moves, so the lawn pallet group can be easily moved without human intervention and the gap between the lawn pallet groups Can be eliminated.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a multipurpose dome according to an embodiment of the present invention.

FIG. 2 is a plan view showing a site of a natural lawn in the multipurpose dome of FIG. 1;

FIG. 3 is a plan view showing a state where a part of the natural lawn of FIG. 1 is moved and transported.

FIG. 4 is a vertical sectional view of a main part of FIG. 3;

FIG. 5 is an enlarged perspective view of a main part of FIG. 3;

FIG. 6 is a sectional view of a main part of FIG. 5;

FIGS. 7A and 7B are views showing the movement of the lawn pallet shown in FIG. 6, in which FIG. 6A is an overall vertical sectional view, FIG. 7B is an enlarged view of a portion B of FIG. 6A, and FIG. It is a C section enlarged view.

8A and 8B are diagrams showing an operation of storing the lawn pallet group of FIG. 7 in a storage shelf, and FIG.
(B) is a figure which shows the state which pulls out the stored lawn pallet group.

9 is a plan view showing an operation of correcting a gap formed between the lawn pallet groups in FIG.

FIG. 10 is a longitudinal sectional view showing a part of FIG. 9;

FIG. 11 is a longitudinal sectional view of a lawn pallet group according to another embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Multipurpose dome 3 Roof 5 Site 7 Audience seat 9 Natural lawn 11 Lawn pallet group 13 Lawn pallet 15 Towing vehicle 17 Wire 19 Sheet 21 Compression device 23 Ventilation duct 25 Compressed air 27 Net 29 Natural grass 31 Root part 33 Sand and sand 35 Part 37 Cavity part 39 Water 41 Sponge 43 Support plate 45 Hole 47 Pumping material 49 Pumping part 51 Water guide material 53 Hole 57 Bolt / Nut 59 Wire 61 Metal fitting 63 Storage shelf 65, 69 Lifting device 67 Inclined plate 71 Belt conveyor 73 Wire 75 Joint 77 crack 79 swell 80 gap 81 force

Claims (1)

(57) [Claims] 1. A pallet on which natural grass is vegetated, a sheet arranged below a plurality of the pallets connected to each other, and an arc shape formed by curving in the width direction of the sheet from end to end in the longitudinal direction of the sheet. A lawn pallet group comprising: a pair of wires disposed in the pallet.