JPH1043356A - Apparatus for changing artificial turf for natural turf in playing ground - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for changing artificial turf for natural turf in a playing ground on which playing soccer and baseball can be performed by changing the artificial turf for the natural turf and music concert and exhibition are performed by using a floor member such as a slab as a floor face. SOLUTION: A conveyer 10 consisting of an endless belt 20 is laid down over the inside to the outside of a playing ground 1. An artificial turf 14 and a natural turf 15 are arranged on the conveyer 10. A slab 16 is arranged on the upper side running part of the conveyer 10. An air blowing-out part is formed in the slab 16 and by pressurizing air into the air blowing-out part from an air compressor 22, loads of the artificial turf 14 and the natural turf 15 are supported by air pressure. The ground of the playing ground 1 can be freely exchanged to the artificial turf 14 and the natural turf 15 by moving rotatably the conveyer 10 by driving motors M1 and M2. In addition, under a condition where the natural turf 15 is carried out to the outside, the natural turf 15 is exposed to the sunlight to perform its growing and cultivation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for switching between artificial turf and natural turf in a stadium such as a dome.

[0002]

2. Description of the Related Art In recent years, artificial turf has been laid in a stadium such as a dome where professional baseball or the like is performed, and a game is played on the artificial turf.

[0003]

On the other hand, the heat of soccer has been increasing in recent years. However, in soccer, players often fall on the ground, and on artificial turf, players can easily get burned due to friction when falling, so soccer is not played on artificial turf, it is exclusively an outdoor natural grass stadium It is done in. The same applies to rugby, football, etc., not limited to soccer. In this kind of stadium, not only sports but also events such as music concerts and various exhibitions are held.

Accordingly, an object of the present invention is to provide an apparatus for switching between artificial turf and natural turf in an athletic field where baseball or soccer can be performed by switching between artificial turf and natural turf. More desirably, it is an object of the present invention to provide a device for switching between artificial turf and natural turf in an athletic stadium where artificial turf and natural turf can be removed and switched to a normal floor.

[0005]

According to the first aspect of the present invention, a plurality of conveyors driven by a motor and rotated along a pulley are laid on a ground surface extending from the inside to the outside of a stadium, and artificial conveyors are provided on the conveyor. A turf and a natural turf are provided, and a floor member is provided between an upper traveling portion and a lower traveling portion of the conveyor. An air blowing portion is formed in the floor member, and air is blown into the air blowing portion. An air pump is provided for feeding the artificial turf and the natural turf on the upper traveling portion by air pressure by blowing up air from the blowing portion. The invention according to claim 2 is configured such that the belt can be cut off at a first intermediate point between the artificial turf and the natural turf and at a second intermediate point upstream of the artificial turf, and the first intermediate point is located at the first intermediate point. One wire was attached and a winding means for the first wire was provided, and a second wire was attached to the second intermediate point and a winding means for the second wire was provided.

[0006]

According to the invention of claim 1, the ground in the stadium can be freely switched to either artificial turf or natural turf in accordance with the game. In addition, natural turf can be sent out of the stadium, and its growth and curing can be achieved by sunlight. According to the second aspect of the present invention, it is possible to perform an event such as a music concert or an exhibition by removing the artificial turf and the natural turf and switching the ground to a floor member.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a plan view showing the inside and outside of the stadium, FIG. 2 is a sectional view of the stadium, FIG. 3 is a plan view of the conveyor, FIG. 4 is a cutaway perspective view of the conveyor, FIG. 5 is a sectional view of the conveyor, FIG. Is a cross sectional view of the conveyor, and FIG. 7 is a partially enlarged cross sectional view of the conveyor.

First, the overall configuration will be described with reference to FIG. 1 and FIG. In FIGS. 1 and 2, the stadium 1 has a circular planar shape, and a spectator seat 2 is provided in a circle. In the state shown in FIGS. 1 and 2, the center of the stadium 1 is the ground 3 of the artificial turf 14, but the ground 3 is switched to the natural turf 15 or the floor member (slab 16) as described later. Can be. The stadium 1 of this example is a covered dome.

In FIG. 2, on the ground surface 4 extending from the inside to the outside of the stadium 1, a plurality of rows of conveyors 10 composed of endless belts 20 (in this example, as shown in FIG.
Column) is laid. The belt 20 includes pulleys 11a and 11
It is tuned to b. The pulleys 11a and 11b are driven and rotated by motors M1 and M2, respectively. 13a, 13
b is a tension roller that abuts on the belt 20 to apply tension to the belt 20. One tension roller 13a is provided so as to be able to retreat downward as indicated by a broken line (see also FIG. 5). An artificial turf 14 and a natural turf 15 are arranged on an upper traveling portion of the conveyor 10. The natural turf 15 is formed by embedding the soil shallowly on the belt 20 (see also FIG. 5). A slab 1 for supporting the upper traveling portion is provided between the upper traveling portion and the lower traveling portion of the conveyor 10.
6 are provided. As described later, this slab 16
Becomes a floor member by removing the artificial turf 14.

In the state shown in FIG. 2, the artificial turf 14 is located on the ground 3 inside the stadium 1. Games such as baseball are performed on the artificial turf 14. In this state, the natural turf 15 is outside the stadium 1 and grows and cures in sunlight. When the motors M1 and M2 are driven to rotate the conveyor 10 in the direction of arrow A, the artificial turf 14 moves between the support members 18 (described later) of the lower traveling portion of the conveyor 10 (see FIGS. 2 and 5). , Natural turf 15 moves to ground 3 inside dome 1.
A game such as soccer is performed by moving the natural grass 15 to the ground 3 in this way. When the motors M1 and M2 are driven in opposite directions to rotate the conveyor 10 in the direction of arrow B, the artificial turf 14 moves to the ground 3 again, and the natural turf 15 is sent out of the stadium 1.

Next, referring to FIG. 3 to FIG.
The structure of 0 will be described in detail. 4 and 5,
The slab 16 is supported by a support member 17 having an H-shaped cross section. The supporting member 17 is supported by supporting members 18 and 19 having an H-shaped cross section in two upper and lower stages perpendicular to the supporting member 17. The upper running portion of the belt 20 runs on the slab 16, and the lower running portion runs between the support members 18 (see FIG. 4). In FIG. 2, the support member 17
Are omitted, and the supporting members 18 and 19 are simply illustrated.

4, 6, and 7, a large number of air blowing portions 24 are provided inside the slab 16. In addition, a pipe 23 communicating with the blowing section 24 is disposed below the slab 16. In FIG. 2, reference numeral 22 denotes an air pump, which feeds air through a pipe 25 to a pipe 23.

The air sent to the pipe 23 is blown upward from the blowing portion 24 as shown by a broken line arrow in FIG. 7, thereby supporting the load of the artificial grass 14 and the natural grass 15. As described above, the load of the artificial turf 14 and the natural turf 15 is borne by the air pressure blown out from the blowout portion 24 of the slab 16, so that even if the motors M1 and M2 have a small capacity, the conveyor 10 is connected to the pulleys 11a and 11b. It can be smoothly rotated along. Since the natural turf 15 must be embanked with a considerable thickness, the weight of the natural turf 15 becomes extremely large. However, the load on the conveyor 10 can be greatly reduced by bearing the load by air pressure, and the small capacity can be obtained. The motors M1 and M2 can be smoothly rotated.

Since the apparatus for switching between artificial turf and natural turf is configured as described above, the ground 3 inside the stadium 1 is artificially turned by rotating the conveyor 10 in the direction of arrow A or the direction of arrow B. The turf 14 and the natural turf 15 can be freely switched. Then, as shown in FIG.
In a state where the water is sent to the outside of the stadium 1, it can be grown and cured by being exposed to sunlight or watering.

Next, means for removing the artificial turf 14 and exposing the slab 16 to the ground surface of the stadium 1 will be described. In FIGS. 2 and 3, the belt 20 is the artificial grass 14.
At a first intermediate point a1 between the turf 15 and the natural grass 15, the turf 15 is detachably connected by a not-shown stopper. The belt 20 is also detachably connected at a second intermediate point b1 (see also FIG. 5) upstream of the artificial turf 14. The upstream side is the side opposite to the natural grass 15. 31
Reference numerals a and 31b denote first wires, one end of which is attached to the belt 20 before a first intermediate point a1 with a stopper 33, and the other end of which is a pulley, as shown in FIGS. It is wound around a drum 32 arranged outside of 11b. M3 is a motor for rotating the drum 32.

In FIGS. 2 and 3, 35a, 35b
Is a second wire, one end of which is a second wire of the belt 20.
The stopper 33 (FIG. 5) is attached just before the intermediate point b1. The other ends of the second wires 35a and 35b are wound around the drum 37. M4 is a motor for rotating the drum 37. The first wires 31a and 31b are connected to the belt 20.
Are arranged along the lower surfaces of both side portions of the upper traveling portion.
The second wires 35a and 35b are disposed along the lower surfaces on both sides of the lower traveling portion of the belt 20.

Next, the handling operation will be described. 2 and 3 show a state in which the artificial turf 14 is laid in the stadium 1, and the slab 16 is exposed by removing the artificial turf 14 by a method described below. First, the tension roller 13a is lowered to the position shown by the broken line in FIGS. 2 and 5 and separated from the belt 20, and the belt 20 is separated at the first intermediate point a1 and the second intermediate point b1. Due to the lowering of the tension roller 13a, the second intermediate point lowers from b1 to b1 '(FIG. 5).

Next, the second wire 3 derived from the drum 37
The ends of the belts 5a and 35b are connected to the ends of the belt 20 separated at the second intermediate point b1 by fasteners 33, and in that state, the motor M4 is driven to connect the second wires 35a and 35b to the drum 37.
To take up. Then, the belt 20 on which the artificial turf 14 is placed is pulled by the second wires 35a and 35b and travels in the direction of the arrow A, and the artificial turf 14 is stored between the support members 19 (shown by broken lines in FIGS. 2 and 5). (See artificial grass 14 shown). At this time, since the belt 20 is separated at the first intermediate point a1, the natural turf 15 remains stationary outside the stadium 1. As described above, the first intermediate point a1 is set to a due to winding the second wires 35a and 35b around the drum 37.
2 (FIGS. 2 and 5), and the second intermediate point moves from b1 ′ to b2 (FIG. 2).

As described above, the artificial turf 14 is supported on the supporting member 1.
9 is exposed to the ground 3 of the stadium 1. By exposing the slab 16 in this manner, it is possible to perform a music concert, a fashion show, various exhibitions, and the like with the slab 16 as a floor. In this case, of course, the driving of the air compressor 22 is stopped.

When returning the artificial turf 14 to the ground surface of the dome 1, the first wires 31a and 31b are led out of the drum 32, connected to the end of the belt 20 at the first intermediate point a2 by the stopper 33, and the motor M3 is driven and the second wire 31 is
a and 31b are wound up. Then, the artificial turf 14 travels in the opposite direction (B direction) as before, and returns to the slab 16. Then, the first intermediate point a1 and the second intermediate point b1 are connected again, and the tension roller 13a is returned to the position indicated by the solid line in FIGS. Thus, the artificial turf 1 is again placed on the slab 16.
4 is laid.

Some dome types have an openable / closable roof, but even if the openable dome is fully opened, sufficient sunlight can enter the dome to grow and cure natural turf. It is difficult to do. Therefore, the present invention is also effective in the case of a dome having an openable roof.

[0022]

According to the present invention, the ground in the stadium can be freely switched between artificial turf and natural turf in accordance with the competition. In addition, natural turf can be sent out of the stadium, and its growth and curing can be achieved by sunlight. Also, by exposing floor members such as slabs in the stadium,
Concerts and exhibitions can also be held.

[Brief description of the drawings]

FIG. 1 is a plan view showing the inside and outside of a stadium.

FIG. 2 is a cross-sectional view of the stadium.

FIG. 3 is a plan view of a conveyor.

FIG. 4 is a cutaway perspective view of a conveyor.

FIG. 5 is a sectional view of a conveyor.

FIG. 6 is a cross-sectional view of a conveyor.

FIG. 7 is a partially enlarged cross-sectional view of a conveyor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stadium 3 Ground 10 Conveyor 11 Pulley 12 Motor 14 Artificial turf 15 Natural turf 16 Slab 22 Air pump 23 Pipe 24 Blow-out part 31a, 31b First wire (winding means) 35a, 35b Second wire (winding means) 32, 37 Drum (winding means) M1, M2, M3, M4 Motor

Claims (2)

[Claims] 1. A plurality of conveyors driven by a motor and rotating along a pulley are laid on a ground surface extending from inside to outside of a stadium, and artificial turf and natural turf are arranged on the conveyor. A floor member is disposed between the upper traveling portion and the lower traveling portion of the conveyor, and an air blower is formed on the floor member, and an air pump for feeding air to the air blower is provided. A device for switching between artificial turf and natural turf in a sports stadium, wherein a load on the artificial turf and the natural turf on the upper traveling unit is supported by air pressure by blowing air from a part. 2. The belt is detachable at a first intermediate point between the artificial turf and the natural turf and at a second intermediate point upstream of the artificial turf, and a first wire is connected to the first intermediate point. 2. A stadium according to claim 1, wherein said first wire is provided with a winding means for winding said first wire, and said second intermediate point is provided with means for winding said second wire. For switching between artificial turf and natural turf.