JPH11336010A - Regeneration device for artificial lawn with top-dressing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple and easily handlable device which restores the elasticity and flexibility of artificial lawn with top-dressing which has been hardened owing to weathering, and uniformly regenerates the surface of the artificial lawn. SOLUTION: This regeneration device is provided with a rotary cylinder 6 rotatably pivoted around a horizontal shaft at the lower side or the rear side of the frame of a self-advancing or a traction type vehicle, a drive means for the rotary cylinder, spike pins 7 spirally implanted on the peripheral face of the rotary cylinder, a lift frame 5 supporting the rotary cylinder so as to be vertically movable, a lifting means 11 for the lift frame 5, and an adjustable shoe 14 equipped on the lift frame 5 to adjust the penetration depth of the spike pins 7. The rotary center shaft 26 of the rotary cylinder 6 is inclined to the advancing direction of the vehicle. By traveling while rotating the rotary cylinder 6, hardened sand on artificial lown face is digged up to regenerate it. the lawn can be uniformly regenerated by spirally fitting the spike pins and tilting the rotary cylinder.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for regenerating sand-filled artificial turf, which recovers the elasticity and flexibility of a new artificial turf provided by scratching the surface of the hardened sand-filled artificial turf. This is related to a device for causing the same.

[0002]

2. Description of the Related Art Sand-filled artificial turf has a moderate cushioning property by rubbing silica sand between nylon artificial turf leaves, and is used for tennis courts, baseball fields, golf courses, park promenades, etc. It is widely used in tennis courts because it is used, has a small burden on the knee, moderately restrains the bouncing of the ball, and is easy to maintain. However, sand-filled artificial turf with such excellent characteristics also has a long-term use, so that the court surface gradually hardens, increasing the burden on the knees, and the phenomenon that the ball bounce increases. What had to be replaced had to be replaced.

Deterioration of the surface characteristics of sand-filled artificial turf due to long-term use is due to the fact that the silica sand rubbed between the leaves is destroyed and becomes finer, and dust and moss on the surface of the sand cause the surface characteristics to deteriorate. It is considered that the sand becomes clay and hardens, and the initial elasticity is lost. Therefore, a reproducing apparatus for recovering the cushioning property of the artificial turf by injecting an air flow onto the surface of the sand to loosen the surface of the sand is disclosed in, for example, JP-A-4-12030.
No. 6, JP-A-5-51915, JP-A-7-7
No. 6804 and the like. Further, a device for regenerating and cleaning the surface of a tennis court by providing a digging element or a brush element on the surface of a rotating body and rubbing the surface of an artificial turf is disclosed in JP-A-59-141614 and JP-A-Hei. This is disclosed in, for example, US Pat.

[0004]

The technique for regenerating artificial turf by injecting high-pressure air onto the surface of a coat has a problem that the power consumption is large, dust flying up during work deteriorates the surrounding environment, and the arrangement of nozzles. If the speed of the jet or jet is not precisely controlled, there may be problems such as unevenness of the regenerated coated surface.In addition, in the case of a device using a conventional rotating brush or the like, the purpose is mainly to clean the coated surface. There are problems such as insufficient regeneration of sand and uneven digging of sand.

[0005] It is an object of the present invention to provide a device which can reproduce the surface of the artificial turf uniformly with a simpler device and which is easy to handle.

[0006]

According to a first aspect of the present invention, there is provided a sand-filled artificial turf regenerating apparatus comprising: a rotating cylinder 6 rotatably supported about a horizontal axis below or behind a frame of a self-propelled or towed vehicle; A driving means 25 for the rotating cylinder, a spike pin 7 spirally erected on the peripheral surface of the rotating cylinder, an elevating frame 5 for supporting the rotating cylinder 6 in a vertically movable manner, and an elevating means 11 for the elevating frame 5. And a depth adjusting shoe 14 attached to the elevating frame 5 to adjust the penetration depth of the spike pins 7.

According to a second aspect of the present invention, in the sand-filled artificial turf regenerating apparatus according to the first aspect, the rotation center axis 26 of the rotary cylinder 6 is inclined with respect to the traveling direction of the vehicle. It is.

According to a third aspect of the present invention, in the apparatus for regenerating sand-filled artificial turf according to the second aspect, the lifting frame 5 is a swing frame whose base end is pivotally supported by a frame of the vehicle 1. The swing center axis 22 is provided in parallel with the rotation center axis 26 of the rotary cylinder 6 so as to be inclined with respect to the traveling direction of the vehicle.

[0009]

1 and 2 are views showing a first embodiment of the present invention. The vehicle 1 is a sports tractor used for ground maintenance and the like, and the reproducing device 2 of the present invention is mounted below the frame 3 of the sports tractor. The reproducing apparatus 2 is provided with a flat U-shaped swing frame 5 which is pivotally supported at its base end by a bearing portion 4 fixed to the vehicle body frame 3 and swings up and down. The plate 5a is fixed. The reinforcing plate 5a is provided with an opening 5b for avoiding interference with the rotating cylinder 6 pivotally supported at the swing end of the swing frame.

The rotating cylinder 6 pivotally supported at both ends by the swing frame has a longitudinal center (coincident with the center of the vehicle body).
A spike pin 7 is erected along a spiral 8 which is symmetrical with respect to FIG. Spike pin 7 is 16m long for athletics shoes
The spike of m is screwed and fixed to the surface of the rotary cylinder 6. The spike pins 7 are planted along the spirals 8 to reduce the pin interval in the vehicle width direction, and the spirals 8 are double spirals or triple spirals to solidify the surface of the artificial turf. The fine pin spacing required to uniformly and finely scrape the sand can be realized.

The driver's seat 9 of the vehicle 1 is provided with an operating lever 11 pivotally supported at a lower intermediate position by a pin 10, and a lower end 12 of the operating lever 11 is connected to the swing frame 5 via a connecting link 13. Are linked. By pulling the operation lever 11 backward, the swing frame 5 moves upward, and the rotating cylinder 6 is lifted. On both sides of the swinging end of the swinging frame 5, depth adjusting shoes 14 whose height can be adjusted by bolts and lock nuts are mounted. The depth adjusting shoe 14 is in contact with the surface of the artificial turf to be regenerated, and adjusts the height of the rotary cylinder 6. Depending on the state of sand on the surface of the artificial turf to be regenerated, spikes It is preferable that the pin 7 is installed at a height at which the tip of the pin 7 penetrates into the surface layer of sand by 4 to 8 mm.

The rotational driving force of the rotary cylinder 6 is supplied by a rotary take-out shaft 15 protruding from the underside of the vehicle body of the sports tractor 1, and as shown in FIG.
The rotation of the pulley 16 mounted on the vehicle is transmitted to the side pulley 18 provided on the side of the vehicle body frame 3 by the belt 17, and is converted by the bevel gear 19 into rotation about a horizontal axis. The first intermediate pulley 21 fixed to the horizontal shaft has a swing center shaft 22.
Is connected to a second intermediate pulley 23 rotatably mounted on the second intermediate pulley 23 by a belt 24. A driving sprocket 25 is integrally fixed to the second intermediate pulley 23. The sprocket 25 is connected by a chain 28 to a driven sprocket 27 fixed to a rotation center shaft 26 of a rotary cylinder. The looseness of the chain 28 is absorbed by the idle roller 29 which is mounted on the swing frame. The rotation of the rotary take-out shaft is transmitted to the driven sprocket 27 attached to the center shaft 26 of the rotating cylinder 6 via the side pulley 18, the intermediate pulleys 21 and 23, and the driving sprocket 25. With the above configuration, the rotary cylinder 6 is driven to rotate at a constant speed regardless of the elevation.

FIG. 3 is a view showing a second embodiment of the present invention. In the second embodiment, the rotating cylinder 6 is mounted on the vehicle 1.
It is mounted at an angle of 15 degrees with respect to the running direction.
The transmission of the rotational force to the inclined rotating cylinder 6 is performed by the same rotation drive system as that of the first embodiment, and the driven sprocket 27 is attached to the center axis 26 of the rotating cylinder via the spherical spline 31. , The inclination of the rotating cylinder 6.

[0015] A regenerative test was conducted on the surface of the tennis court having an old surface and a hard surface with the penetration depths of the spike pins 7 of 3 mm, 6 mm, and 9 mm by the apparatus configured as described above. The best results were obtained when stir-up regeneration was performed. However, it is impossible for the reproducing apparatus to return to the original state completely. This is because the particle size of the sand on the surface has been reduced by long-term use, and ultimately it is necessary to replace the surface sand and regenerate it. In the case of regeneration involving replacement of sand, it is preferable that the penetration depth of the spike pins 7 is set to a relatively large value so that more sand is agitated and then replaced.

FIGS. 4 and 5 show a third embodiment of the present invention. In the third embodiment, the playback device 2 includes the fixed frame 32 and the swing frame 5, and the fixed frame 32 is fixed to the body frame 3 of the sports tractor, so that the playback device 2 can be attached. I can do it. As in the second embodiment, the rotary cylinder 6 is attached to the swing end of the swing frame 5 at an angle to the traveling direction of the vehicle, and in the third embodiment, the swing frame 5 is parallel to the rotation center axis 26 of the rotary cylinder, that is, oblique with respect to the traveling direction of the vehicle 1. Therefore, the swing frame 5
Has a U shape that is obliquely crushed in plan view.

A driving system for rotatingly driving the rotary cylinder 6 includes a first driving system.
It is the same as that of the embodiment, but since the rotation center axis 26 and the swing center axis 22 are slanted, the whole is arranged obliquely. And the side pulley 1 of this rotary drive system
8, the bevel gear 19, the swing center shaft 22, and the drive sprocket 25 are all supported by a fixed frame 32,
By attaching and detaching the fixed frame 32, the fixed frame 32 can be removed from the vehicle body frame 3.

FIG. 6 shows a fourth embodiment of the present invention, which is used by being pulled by a sports tractor during a recovery operation. The elevating frame 5 of the reproducing apparatus 2 has a box shape composed of a front plate 35 having an arc-shaped cross section, both side plates 36 and a top plate 37, and the bearing portion 4 of the body frame 3 is provided on the upper surface of the top plate 37.
There is provided an inverted L-shaped connecting rod 38 which is locked to the swing center shaft 22 mounted on the vehicle. A stopper 39 for fitting a ball nut described later is provided on a side portion of the connecting rod. On both side plates 36 of the lifting frame 5, brush rollers 40 are mounted on the front plate side in a direction perpendicular to the traveling direction of the vehicle,
A rotating cylinder 6 having a spike pin 7 planted behind it is mounted parallel to the brush roller 40. The rotation direction of the brush roller and the rotating cylinder is opposite to the traveling direction of the sports tractor (right rotation direction in the figure). Depth adjusting shoes 14 are mounted on both rear sides of the rotating cylinder.

A gear box 4 is provided at the center of the surface of the front plate 35.
1 is fixedly provided, and a first intermediate shaft 42 whose base end is connected to the bevel gear of the gear box is provided in parallel with the connecting rod 38. The gear box 41 has a second intermediate shaft 43 to which a bevel gear meshing with the bevel gear of the first intermediate shaft is fixed.
And a driven sprocket fixed to one end of the second intermediate shaft, and driven sprockets fixed to the central axis 44 of the brush roller and the central axis 26 of the rotary cylinder, respectively, outside the side plate. They are connected by a chain 28.

On the other hand, the rotary take-out shaft 15 projecting from the lower surface of the sports tractor is connected by a bevel gear mechanism 45 to a shaft 46 provided along the bottom surface of the body frame 3 in the traveling direction of the vehicle. First intermediate shaft 4
2 are connected by a universal joint 47. In addition, a motor 50 of a Bohone screw 49 into which a ball nut 48 is screwed is swingably mounted at the rear of the sports tractor. Note that a gasoline engine may be mounted on the elevating frame 5 of the reproducing apparatus, and the rotating cylinder 6 and the brush roller 40 may be driven by the output of the gasoline engine.

When the playback device is towed by a sports tractor, the connecting rod 38 is locked on the swinging center shaft 22, the ball nut 48 is fitted on the connecting rod stopper 39, and the shaft 46 is pulled.
And the first intermediate shaft 42 are connected by a universal joint. The height of the depth adjusting shoe 14 is determined based on the hardness of the artificial turf. If necessary, the weight 51 is placed on the top plate, and the playback device is run on the artificial turf containing sand while being pulled by a sports tractor. The spike pins 7 of the regenerating device evenly dig up the silica sand rubbed into the artificial turf, and brush the digged-up silica sand with the brush roller 4.
0 skips behind the playback device.

[Brief description of the drawings]

FIG. 1 is a side view of a playback device according to a first embodiment.

FIG. 2 is a bottom view of the playback device according to the first embodiment;

FIG. 3 is a bottom view of the playback device according to the second embodiment;

FIG. 4 is a side view of a reproducing apparatus according to a third embodiment.

FIG. 5 is a bottom view of the playback device according to the third embodiment;

FIG. 6 is a side view of a reproducing apparatus according to a fourth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle 5 Swing frame 6 Rotating cylinder 7 Spike pin 11 Operation bar 14 Depth adjustment shoe 22 Swing center shaft 25 Drive sprocket 26 Rotation center shaft

Claims (3)

[Claims] 1. A rotating cylinder (6) rotatably supported around a horizontal axis below or behind a frame of a self-propelled or towed vehicle, a driving means (25) for the rotating cylinder, Spike pins (7) spirally erected on the peripheral surface and a lifting frame (5) that supports a rotating cylinder (6) so that it can move up and down.
Lifting means (11) for the lifting frame (5), and the lifting frame
And a depth adjusting shoe (14) mounted on the (5) for adjusting the penetration depth of the spike pin (7). 2. The sand-filled artificial turf regenerating apparatus according to claim 1, wherein a rotation center axis of the rotary cylinder is inclined with respect to a traveling direction of the vehicle. The lifting frame (5) is a swinging frame whose base end is pivotally supported by a frame of the vehicle (1), and the swinging center axis (22) of the swinging frame is relative to the traveling direction of the vehicle. The artificial sand turf regenerating apparatus according to claim 2, characterized in that the artificial turf is sanded and inclined so as to be parallel to the rotation center axis (26) of the rotary cylinder (6).