CN85109207A

CN85109207A - The artificial turf playing field of quick draining

Info

Publication number: CN85109207A
Application number: CN198585109207A
Authority: CN
Inventors: 卡尼·戴尔·阿伦特
Original assignee: Monsanto Co
Current assignee: Monsanto Co
Priority date: 1984-12-17
Filing date: 1985-12-16
Publication date: 1986-07-30
Also published as: AU5126885A; EP0185645A2; JPS61146903A; FI854975A0; NO855068L; EP0185645A3; NZ214569A; FI854975A

Abstract

The present invention proposes a kind of quick-drying sports ground, and it is bonded to by permeable chinampa, and institute forms on the foamable polymer cushion pad of closed pore, and this composite bed loosely is placed on the fluid-tight ground of inclination, forms an interface.Rainwater sees through chinampa and cushion pad, and flows in the interface below lawn of floating and cushion pad.

Description

The artificial turf playing field of quick draining

The invention relates to the artificial turf playing field of quick draining.

Proposed the design scheme of many relevant sports grounds, purpose is that playtime is extended to rainy season, and is provided at the high-quality athletic ground that can use immediately behind the rain.Under the situation in the smooth place of needs,, be the ponding that utilizes on the mechanical means eliminating sports grounds such as blowing machine or vacuum cleaner as the baseball field always.In addition, many designs that help to get rid of smooth sports ground puddle are also proposed.2,837, No. 984 United States Patent (USP)s have been revealed the method in speedy drying tennis court, and this tennis court is laid granular limestone and built up on clay foundation.1,763, No. 782 United States Patent (USP) has been revealed the sports ground that is built up by the fabric that is embedded in the cement blowoff basin.1,906, No. 494 United States Patent (USP)s are revealed the sports ground that is made of asphaltic felt floor, permeable layer of concrete and stone or hardcore bed.

Now existingly use the chinampa similar to natural meadow to replace the high sport surface of maintenance cost, for example, beat the area end around the golf match play, though that this place not necessarily needs is smooth, requires to have good seepage of water.2,515, No. 847,3,740, No. 303 and 4,007, No. 307 United States Patent (USP)s, and 886, No. 152 Canadian Patents have all been revealed the chinampa of mating formation on pervious layers such as sand, cobble, stone, cypress glue, plastic sheet.Though as if this sports ground have water permeability to a certain degree,, even be that the basis of this sports ground is as all firm in inadequately to keep level and smooth sport surface when travelling maintenance vehicle accidentally on this place.Thereby, to have designed in recent years at sports ground with the chinampa of mating formation on the concrete foundation of water permeability, this sports ground has two kinds of advantages in basis of good penetration and firm stable concurrently.1,906, No. 494 United States Patent (USP) has just proposed to have infiltrative concrete foundation as far back as nineteen thirty.This patent has been revealed the sports ground that is made of asphaltic felt layer, permeable layer of concrete and stone or hardcore bed.Now also use the basic unit of bitumeniferous permeability concrete, for example, see United States Patent (USP) No. 4515839 as artificial turf playing field.

In other cases, as rugby and Association football sports ground gradient being arranged is the inclined-plane of 1-2%, and it helps to get rid of the ponding on the sports ground.There is the sports ground of gradient that catchwater can be set, reveals, run through natural meadow sports ground top layer and be provided with the vertical row ditch as No. 3611729 United States Patent (USP)s; No. 3625011 United States Patent (USP) is revealed, is provided with at artificial turf playing field and covers the gutter.In this case, artificial turf playing field comprises that requirement has the impervious layer of gradient, and for example the gradient of rugby sports ground is about 1-2%, and rainwater is released.In some cases, the impervious layer of the chinampa of mating formation is because chinampa itself is to be planted with tow by artificial blade of grass to constitute in being covered with on the fluid-tight polymer end liner, and this impermeable polymer layer helps the pedaline bundle is fixed on the end liner.In other cases, the impervious layer of mating formation is because the chinampa pervious layer adheres on the polymer buffer pad and/or this polymer buffer pad adheres to again on the bottom of gradient.Though there is the artificial turf playing field of gradient that water is released, the blade of grass that these water pass chinampa flows, and there is sizable resistance on the lawn to current.General this sports ground is owing to have constant slope and the central area projection, for example for fringe region into about 1% gradient.This centre that the sports ground of gradient is arranged, for example central protuberance near, general relatively drier.But because the blade of grass of chinampa stops water to flow, the water level of sports ground fringe region just raises, and often floods near the area of the blade of grass of chinampa, particularly edge region and forms disagreeable ponding.

The applicant can provide a kind of quick draining artificial turf playing field by the present invention, and this sports ground has the impermeability ground gradient is arranged again.The present invention can get rid of the ponding of this sports ground fast, does not have near the problem of the ponding fringe region of this artificial turf playing field in the past.Used the porous polymer cushion pad of the very smooth closed pore in a kind of bottom surface for this reason.Rainwater flows out from the hole on permeable chinampa and the polymer buffer pad.Cushion pad loosely is laid on the fluid-tight ground of inclination, and it can make water see through cushion pad, when flow in the interface between the bottom of lax cushion pad of placing and inclination, floats chinampa and cushion pad.

The invention provides a kind of artificial turf playing field, is the permeable chinampa as the upper strata to be bonded on the foamable polymer cushion pad as the very smooth closed pore in the baseplane of lower floor form.Cushion pad loosely is placed on the fluid-tight ground of inclination, forms an interface between them.The proportion of the composite bed of being made up of chinampa and cushion pad is littler than water, and therefore, the rainwater that drops on sports ground can ooze out from composite bed, and it is floated on the water surface that intermediate interface flows.

Accompanying drawing is to the invention is intended to explanation.Among the figure, the composite bed that chinampa and polymer buffer pad are formed loosely is placed on the fluid-tight ground of inclination, forms the interface, makes rainwater flow into the gutter that is positioned at the sports ground edge under composite bed.

According to the present invention, the applicant provides a kind of artificial turf playing field, the composite bed of chinampa and cushion pad composition loosely is placed on the fluid-tight ground of inclination, form the interface, make the rainwater interface of below the chinampa cushion pad that floats, flowing through, thereby provide the sports ground of quick draining, with reference to Fig. 1.Fig. 1 specifies the present invention.Shown in the figure, composite bed (1) is made of the foamable polymer cushion pad (3) that the infiltration chinampa (2) as the upper strata is bonded to as the closed pore of lower floor.Many holes (4) are arranged on the cushion pad, and have very smooth basal surface.Composite bed loosely is placed on the fluid-tight bottom (5) of inclination, has formed interface (6) between them.The rainwater that drops on the sports ground can see through chinampa (2), and (4) are passed cushion pad and entered interface (6) through the hole again.The proportion of composite bed is littler than water, can float in interface (6) to flow on the water surface in gutter (9) along the waterproof bottom layer surface that tilts.The gutter can be made up of the raceway groove that filler (10) is housed.Void channels (11) are used for carrying the rainwater that accumulates in the raceway groove.The marginal portion of this sports ground can be fixed with any desirable mode, for example, available nail with its stickfast on the timber that is fixed in concrete supporter (8) (7).

Though artificial turf playing field part can float on along the bottom that tilts flow waterborne, but, because the edge of sports ground is fixed, and can not accumulate in the sports ground centre of the rat part that is positioned at inclination and to be enough to make its water yield of floating, so that sports ground still can keep is stable.With regard to this point, an offer has such gradient of 1/100 just to be enough to realize by the interface between chinampa/cushion pad composite bed and the fluid-tight ground purpose of quick draining.For make composite bed float over from sports ground discharge waterborne, its key is that the ratio of composite bed is important littler than water.Another key point is that the hole on the polymer buffer pad is sealed, can prevent from water is sucked cushion pad, otherwise, will increase the apparent density of composite bed, and can not float.The method that the present invention preferentially selects for use is that the thickness of cushion pad will be higher than and floats the required hydraulic head of composite bed, so that make the plane that is lower than chinampa at the water level at the cushion pad place of floating.The expert of the industry is very familiar to chinampa, and the chinampa of any infiltration all can be used for practice of the present invention.Another method of preferentially selecting for use of the present invention is that infiltrative chinampa is that braiding chinampa by intrinsic seepage of water constitutes.When this braiding chinampa is that this class chinampa often elongated or shortened with the variation of ambient temperature when artificial blade of grass was woven on the polyester end liner by nylon.Therefore, it would be desirable this chinampa is bonded on the polymer buffer pad.

The polymer buffer pad that sports center of the present invention is used is to be made by the closed pore foamable polymer that polyvinyl chloride and nitrile rubber and copolymer are made.The thickness range of this pad is about 1/4-1 inch (6.3-25.4 millimeter).For a large amount of rainwater can be discharged from composite bed, cushion pad should have many holes, and the diameter in these effective holes is little to 1/8 inch (3 millimeters) or greatly to 1/2 inch (12.7 millimeters), and is perhaps bigger.The spacing in these holes can be 2 inches (5 centimetres), or less than 2 inches, also can be 6-8 inch (15-20 centimetre), or bigger.

In an optimum implementation, the thickness of polymer buffer pad is about 5/8 inch (16 millimeters), and the aperture is 3/8 inch (9.5 millimeters), and the hole center distance is 3 inches (7.6 centimetres), proves effective.The proportion of sort buffer pad is about 0.12, and corresponding basic weight is 0.39 pound/foot ²(19 Pascal).Being woven in the chinampa layer that constitutes on the polyester end liner by the nylon blade of grass is bonded on the cushion pad.The basic weight of chinampa is 0.48 pound/foot ²(23 Pascal), the basic weight of used bonding adhesive is about 0.1 pound/foot ²(5 Pascal).Total basic weight of composite bed is 0.97 pound/foot ²(47 Pascal).When chinampa floated, the water level high approximately 3/16 inch (4.7 millimeters) on 5/8 inch (16 millimeters) thick cushion pad was well below the horizontal plane of chinampa.

Though above set forth the special instantiation of the present invention, clearly, under the situation that does not exceed true spirit of the present invention and scope, being familiar with the technician and can also making various improvement of the industry.Therefore, make every effort to make following claim scope can comprise that all these belong to the improvement of whole invention thought.

Claims

1, artificial turf playing field is characterized in that being bonded to the composite bed of forming on the foamable polymer cushion pad as the smooth closed pore in the bottom surface of lower floor by the permeable chinampa as the upper strata constitutes; Above-mentioned cushion pad loosely is placed on the fluid-tight ground of inclination, forms the interface between them; The proportion of above-mentioned composite bed is littler than water, and therefore, the rainwater that drops on the sports ground can ooze out from above-mentioned composite bed, makes above-mentioned composite bed float on the water surface that flows in above-mentioned interface.

2, the sports ground of claim 1 indication, the thickness of the cushion pad that it is used are higher than makes above-mentioned composite bed float required hydraulic head.

3, the sports ground of claim 2 indication, most of zone of above-mentioned ground has one to be at least about 1% gradient.