CA2166990C - Apparatus for the cutting of one or more grass sods and a method for the stacking thereof - Google Patents
Apparatus for the cutting of one or more grass sods and a method for the stacking thereof Download PDFInfo
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- CA2166990C CA2166990C CA002166990A CA2166990A CA2166990C CA 2166990 C CA2166990 C CA 2166990C CA 002166990 A CA002166990 A CA 002166990A CA 2166990 A CA2166990 A CA 2166990A CA 2166990 C CA2166990 C CA 2166990C
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Abstract
Apparatus for cutting grass sods out of grass land and for stacking or rolli ng up into a predetermined amount of stacks or rolls of one or more grass sods, comprising: a frame (2) provided with two or more wheels suspended thereon, a cutting head (5) suspended in the flame for cutting under the grass sods, a first conveyor (6) which is mounted on the frame in driving direction as seen from behind the cutting head and which repeatedly transports the grass sods from the cutting head in an upwards direction, a second conveyor (7) mounted on the frame in a driving direction as seen from behind the first conveyor a nd whereof at least one part is moveable with respect to the first conveyor and/or the other part to the second conveyor. The base concept of t he present invention aims to provide a universal grass sod cutting apparatus which can process big rolls as well as stacked grass sods in other ways. Due to the working costs and level of training needed for personal working on the land, the automatic laying down (and therefore also the manufacturing of) large rolls of grass sods is more or less desired.
Description
~O 95/02317 . PCT/NL94/00159 216~99~
APPARATUS FOR THE CUTTING OF ONE OR MORE
' GRASS SODS AND A METHOD FOR THE
STACKING THEREOF
Due to various reasons it has become fashionable to cut increasingly broader grass sods, of for instance 48 inches or 120 cm (more than 40 or 60 cm) out of grass land with the help of cutting means. These reasons mostly concern the c,~uicker laying down of large grass surface areas, such as those needed for sports fields, golf courses, large lawns and such like, as well as the greater possibilities for laying down of large rolls of grass lengths with the help of apparatus.
In the European patent application EP-A-0178081 and the European patent application published under the number EP-A-0420689, devices are described for the laying down of broad grass sods (in the form of so called big rolls) .
In the European patent published under the number EP-A-0221745, a driven vehicle is described for the making of such big rolls from grass sods. This device is however only suitable for this and does not allow for the cutting and stacking of grass sods in any other way.
The present invention provides a method for cutting out and stacking up of one or more grass sods wherein the first part of a cut out grass sod is placed on a holder therefor whereafter the grass sod is folded up and a second part of the grass sod is placed on the first part.
According to this first aspect of the invention a method is provided which makes it possible to cut out and stack up grass sods in such a manner that a similar grass sod can be pulled of the stacked up grass sods with a relatively simple help means or with the hand, and placed then at the desired place.
I . a a . . II n n j I r ! .
APPARATUS FOR THE CUTTING OF ONE OR MORE
' GRASS SODS AND A METHOD FOR THE
STACKING THEREOF
Due to various reasons it has become fashionable to cut increasingly broader grass sods, of for instance 48 inches or 120 cm (more than 40 or 60 cm) out of grass land with the help of cutting means. These reasons mostly concern the c,~uicker laying down of large grass surface areas, such as those needed for sports fields, golf courses, large lawns and such like, as well as the greater possibilities for laying down of large rolls of grass lengths with the help of apparatus.
In the European patent application EP-A-0178081 and the European patent application published under the number EP-A-0420689, devices are described for the laying down of broad grass sods (in the form of so called big rolls) .
In the European patent published under the number EP-A-0221745, a driven vehicle is described for the making of such big rolls from grass sods. This device is however only suitable for this and does not allow for the cutting and stacking of grass sods in any other way.
The present invention provides a method for cutting out and stacking up of one or more grass sods wherein the first part of a cut out grass sod is placed on a holder therefor whereafter the grass sod is folded up and a second part of the grass sod is placed on the first part.
According to this first aspect of the invention a method is provided which makes it possible to cut out and stack up grass sods in such a manner that a similar grass sod can be pulled of the stacked up grass sods with a relatively simple help means or with the hand, and placed then at the desired place.
I . a a . . II n n j I r ! .
2 Furthermore the present invention provides an apparatus for cutting grass sods out of grass land and for stacking or rolling up into a pre-determined amount of stacks or rolls of one or more grass sods, comprising:
- a frame provided with two or more wheels suspended thereon, - a cutting head suspended in the frame for cutting under the grass sods, - a first conveyor which is mounted on the frame in driving direction as seen from behind the cutting head and which repeatedly transports the grass sods from the cutting head in an upwards direction, - a second conveyor mounted on the frame in a driving direction as seen from behind the first conveyor and whereof at least on part is moveable with respect to the first conveyor and/or the other part to the second conveyor.
The base concept of the present invention aims to provide a universal grass sod cutting apparatus which can process big rolls as well as stacked grass sods in other ways. Due to the working costs and level of training needed for personnel working on the land, the automatic laying down (and therefore also the manufacturing of) large rolls of grass sods is more or less desired.
A broad aspect of the invention provides a method for cutting out and stacking up of one or more grass sods wherein a first substantially flat part of a grass sod is placed onto a holder therefor, whereafter the grass sod is folded up and a second substantially flat part of the grass sod is placed onto the first part, so that a continuously , i ~. ,.~,~ . il a ~. I ~ .. I.
' 21766-723 2a running grass sod is stacked in a zig-zag manner, comprising at least two folds of the grass sod.
Another broad aspect of the invention provides apparatus for cutting grass sods out of grass land and for stacking a predetermined amount of one or more grass sods in a zig-zag manner, comprising: a frame provided with two or more wheels suspended thereon; a cutting head suspended in the frame for cutting under the grass sods a first conveyor which is mounted on the frame in driving direction as seen from behind the cutting head and which repeatedly transports the grass sods from the cutting head in an upwards direction; a second conveyor mounted on the frame in a driving direction as seen from behind the first conveyor and whereof at least one part is moveable with respect to the first conveyor and another part to the second conveyor.
A further broad aspect of the invention provides a method for cutting out and stacking on a holder supported by a holder supporting means, at least one grass sod having a first part and a second part, the method comprising the steps of: (a) moving in a first direction a reciprocating conveyor utilized to transport the at least one grass sod to the holder; (b) placing on the holder during movement of the conveyor in the first direction the first part of the grass sod; (c) moving the conveyor in a second direction opposite the first direction; (d) folding the grass sod; and (e) placing on the holder during movement of the conveyor in the second direction the second part of the grass sod.
A still further broad aspect of the invention provides an apparatus for cutting grass sods out of grass land and for at least one of stacking and rolling the grass sods, comprising: a frame having a plurality of wheels mounted thereon; a cutting head carried on the frame for i ~ ~~,~ ~ o ~~ ~ i ~ ,a i, 2b cutting under the grass sods; a first conveyor mounted on the frame behind the cutting head and which repeatedly transports the grass sods from the cutting head in an upwards direction;
a second conveyor mounted on the frame behind the first conveyor; and a holder supporting means secured to the frame, wherein: the second conveyor comprises a fixed part and a moveable part; and the moveable part of the second conveyor is moveable reciprocatingly over a surface of a holder positioned on the holder supporting means.
A yet further broad aspect of the invention provides an apparatus for cutting grass sods out of grass land and for at least one of the stacking and rolling the grass sods, comprising: a frame having a plurality of wheels mounted thereon; a cutting head carried on the frame for cutting under the grass sods; a first conveyor mounted on the frame behind the cutting head which repeatedly transports the grass sods from the cutting head in an upwards direction; a second conveyor mounted on the frame behind the first conveyor wherein: the second conveyor comprises a fixed part and a moveable part; and the first conveyor in a first position connects onto the second conveyor and in a second position connects onto an auxiliary conveyor belonging to the first conveyor for conveying the grass sods under the second conveyor and for forming a roll of grass sods with the help of at least one of the fixed part and the moveable part of the second conveyor.
Yet another broad aspect of the invention provides an apparatus for cutting grass sods out of grass land and for stacking to a predetermined quantity at least one grass sod, comprising: a frame having two or more wheels; a cutting head carried on the frame for cutting the grass sods therebeneath; a conveyor mounted on the frame behind the cutting head for repeatedly transporting the sods upwards 2c from the cutting head; a holder supporting means secured to the frame; and a reciprocating member secured to an end of the conveyor and over the holder supporting means for stacking the grass sods in a to and fro movement downwards from the conveyor onto a storage holder positioned on the holder supporting means.
Yet another broad aspect of the invention provides an apparatus for cutting grass sods out of grass land and stacking to a predetermined quantity the grass sods, comprising: a frame having at least two wheels; a cutting head carried on the frame and which is provided with a plurality of knives for cutting the grass sods beneath the cutting head; a conveyor mounted on the frame behind the cutting head for repeatedly transporting the grass sods upwards from the cutting head, wherein the conveyor is provided with displacing means for displacing the grass sods at least one of towards and away from each other during the transporting upwards of the grass sods.
Still another broad aspect of the invention provides an apparatus for cutting grass sods out of grass land and collecting a predetermined quantity of grass sods, comprising: a frame provided with at least two wheels suspended thereon; a cutting head suspended in the frame and which serves for cutting the grass sods therebeneath; a conveyor mounted on the frame behind the cutting head and which serves for repeatedly transporting the grass sods upwards from the cutting head; a receiving device including two downwardly pointing conveyors which mutually form an acute angle therebetween, wherein in a first position, the grass sod is rolled up and wherein a second position the rolled up grass sod is unloaded onto a pallet.
I ,i, II il I 1 I n I' i 2d Yet a further broad aspect of the invention provides a method for cutting out and stacking grass sods having a desired breadth, the method comprising the steps of: placing a first substantially flat part of grass sod onto a height adjustable holder therefor; folding the grass sod; placing a second substantially flat part of the grass sod onto the first part such that a continuously running grass sod is stacked in a zig-zag manner with the grass sod having at least two folds; and adjusting the height of the holder as the grass sod is stacked in the zig-zag manner.
Further advantages, characteristics and details of the present invention will become clear with respect to the following description of a preferred embodiment thereof, with reference to the accompanying drawings which show:
Figure 1 a perspective view of a preferred embodiment of the apparatus according to the present invention, Figure 2 a side view of the apparatus from figure 1 in a first working position, Figure 3 a side view of the apparatus from figure 1 in a second working position, Figure 4 a scheme of a possible embodiment of the hydraulic system of the apparatus from figure 1, Figure 5 a perspective view of detail 5 in figure 1, ~O 95/02317 , ' ~ PCT/NL94/00159
- a frame provided with two or more wheels suspended thereon, - a cutting head suspended in the frame for cutting under the grass sods, - a first conveyor which is mounted on the frame in driving direction as seen from behind the cutting head and which repeatedly transports the grass sods from the cutting head in an upwards direction, - a second conveyor mounted on the frame in a driving direction as seen from behind the first conveyor and whereof at least on part is moveable with respect to the first conveyor and/or the other part to the second conveyor.
The base concept of the present invention aims to provide a universal grass sod cutting apparatus which can process big rolls as well as stacked grass sods in other ways. Due to the working costs and level of training needed for personnel working on the land, the automatic laying down (and therefore also the manufacturing of) large rolls of grass sods is more or less desired.
A broad aspect of the invention provides a method for cutting out and stacking up of one or more grass sods wherein a first substantially flat part of a grass sod is placed onto a holder therefor, whereafter the grass sod is folded up and a second substantially flat part of the grass sod is placed onto the first part, so that a continuously , i ~. ,.~,~ . il a ~. I ~ .. I.
' 21766-723 2a running grass sod is stacked in a zig-zag manner, comprising at least two folds of the grass sod.
Another broad aspect of the invention provides apparatus for cutting grass sods out of grass land and for stacking a predetermined amount of one or more grass sods in a zig-zag manner, comprising: a frame provided with two or more wheels suspended thereon; a cutting head suspended in the frame for cutting under the grass sods a first conveyor which is mounted on the frame in driving direction as seen from behind the cutting head and which repeatedly transports the grass sods from the cutting head in an upwards direction; a second conveyor mounted on the frame in a driving direction as seen from behind the first conveyor and whereof at least one part is moveable with respect to the first conveyor and another part to the second conveyor.
A further broad aspect of the invention provides a method for cutting out and stacking on a holder supported by a holder supporting means, at least one grass sod having a first part and a second part, the method comprising the steps of: (a) moving in a first direction a reciprocating conveyor utilized to transport the at least one grass sod to the holder; (b) placing on the holder during movement of the conveyor in the first direction the first part of the grass sod; (c) moving the conveyor in a second direction opposite the first direction; (d) folding the grass sod; and (e) placing on the holder during movement of the conveyor in the second direction the second part of the grass sod.
A still further broad aspect of the invention provides an apparatus for cutting grass sods out of grass land and for at least one of stacking and rolling the grass sods, comprising: a frame having a plurality of wheels mounted thereon; a cutting head carried on the frame for i ~ ~~,~ ~ o ~~ ~ i ~ ,a i, 2b cutting under the grass sods; a first conveyor mounted on the frame behind the cutting head and which repeatedly transports the grass sods from the cutting head in an upwards direction;
a second conveyor mounted on the frame behind the first conveyor; and a holder supporting means secured to the frame, wherein: the second conveyor comprises a fixed part and a moveable part; and the moveable part of the second conveyor is moveable reciprocatingly over a surface of a holder positioned on the holder supporting means.
A yet further broad aspect of the invention provides an apparatus for cutting grass sods out of grass land and for at least one of the stacking and rolling the grass sods, comprising: a frame having a plurality of wheels mounted thereon; a cutting head carried on the frame for cutting under the grass sods; a first conveyor mounted on the frame behind the cutting head which repeatedly transports the grass sods from the cutting head in an upwards direction; a second conveyor mounted on the frame behind the first conveyor wherein: the second conveyor comprises a fixed part and a moveable part; and the first conveyor in a first position connects onto the second conveyor and in a second position connects onto an auxiliary conveyor belonging to the first conveyor for conveying the grass sods under the second conveyor and for forming a roll of grass sods with the help of at least one of the fixed part and the moveable part of the second conveyor.
Yet another broad aspect of the invention provides an apparatus for cutting grass sods out of grass land and for stacking to a predetermined quantity at least one grass sod, comprising: a frame having two or more wheels; a cutting head carried on the frame for cutting the grass sods therebeneath; a conveyor mounted on the frame behind the cutting head for repeatedly transporting the sods upwards 2c from the cutting head; a holder supporting means secured to the frame; and a reciprocating member secured to an end of the conveyor and over the holder supporting means for stacking the grass sods in a to and fro movement downwards from the conveyor onto a storage holder positioned on the holder supporting means.
Yet another broad aspect of the invention provides an apparatus for cutting grass sods out of grass land and stacking to a predetermined quantity the grass sods, comprising: a frame having at least two wheels; a cutting head carried on the frame and which is provided with a plurality of knives for cutting the grass sods beneath the cutting head; a conveyor mounted on the frame behind the cutting head for repeatedly transporting the grass sods upwards from the cutting head, wherein the conveyor is provided with displacing means for displacing the grass sods at least one of towards and away from each other during the transporting upwards of the grass sods.
Still another broad aspect of the invention provides an apparatus for cutting grass sods out of grass land and collecting a predetermined quantity of grass sods, comprising: a frame provided with at least two wheels suspended thereon; a cutting head suspended in the frame and which serves for cutting the grass sods therebeneath; a conveyor mounted on the frame behind the cutting head and which serves for repeatedly transporting the grass sods upwards from the cutting head; a receiving device including two downwardly pointing conveyors which mutually form an acute angle therebetween, wherein in a first position, the grass sod is rolled up and wherein a second position the rolled up grass sod is unloaded onto a pallet.
I ,i, II il I 1 I n I' i 2d Yet a further broad aspect of the invention provides a method for cutting out and stacking grass sods having a desired breadth, the method comprising the steps of: placing a first substantially flat part of grass sod onto a height adjustable holder therefor; folding the grass sod; placing a second substantially flat part of the grass sod onto the first part such that a continuously running grass sod is stacked in a zig-zag manner with the grass sod having at least two folds; and adjusting the height of the holder as the grass sod is stacked in the zig-zag manner.
Further advantages, characteristics and details of the present invention will become clear with respect to the following description of a preferred embodiment thereof, with reference to the accompanying drawings which show:
Figure 1 a perspective view of a preferred embodiment of the apparatus according to the present invention, Figure 2 a side view of the apparatus from figure 1 in a first working position, Figure 3 a side view of the apparatus from figure 1 in a second working position, Figure 4 a scheme of a possible embodiment of the hydraulic system of the apparatus from figure 1, Figure 5 a perspective view of detail 5 in figure 1, ~O 95/02317 , ' ~ PCT/NL94/00159
3 Figure 6 a perspective view of stacked up grass sods, relating to the position shown in figure 2.
Figure 7 a perspective view of stacked up grass sods according to the position shown in figure 3, and Figure 8 a perspective view of one of the other possibilities for a stacking of relatively large grass sods.
An apparatus (figure 1) according to the present invention comprises a frame 2 which is provided with a bar on the front side to be secured to a draw bar eye 4 of a pulley (not shown). A cutting head 5 is secured in frame 2 which is preferably changeable and suspended somewhat moveable_in the frame 2, so that this cutting head 5 can follow possible irregularities in the ground surface level and can thus cut out grass sods of near enough uniform thickness. Details of a cutting head for cutting out grass sods are described in the older patent US-A=4.892.152 of the applicant. Although the cutting head 5 is capable of cutting out grass sods with a breadth of 48 inches, 120 cm or for instance 1 meter, one or more narrower strips of grass can also be cut out with another cutting head. It is possible far the cutting out of grass sods with a conventional breadth to suspend three knives next to each other in the cutting head which are preferably somewhat moveable relative to each other. Suspending is preferably such that with three knives next to each other an equal force is exerted on the knives by the weight of the holder or the cutting head frame.
In the frame 2, a first conveyor 6 is secured behind the cutting head for transporting the grass sods upwards from the cutting head (see arrow W). A second conveyor 7 is also secured on the frame 2 which in the position shown in figures 1 and 2 connects to the conveyor 6 and transports the grass sods further in an upwards direction (arrow B) whereafter these are transported downwards between these conveyors 8 or 9, which both form part of the second conveyor 7, and are stacked on a pallet P. The pallet P is shifted onto a fork 10, which is secured to a frame part 11, which according to arrow C is moveable WO 95/02317 PCT/NL94/001~
Figure 7 a perspective view of stacked up grass sods according to the position shown in figure 3, and Figure 8 a perspective view of one of the other possibilities for a stacking of relatively large grass sods.
An apparatus (figure 1) according to the present invention comprises a frame 2 which is provided with a bar on the front side to be secured to a draw bar eye 4 of a pulley (not shown). A cutting head 5 is secured in frame 2 which is preferably changeable and suspended somewhat moveable_in the frame 2, so that this cutting head 5 can follow possible irregularities in the ground surface level and can thus cut out grass sods of near enough uniform thickness. Details of a cutting head for cutting out grass sods are described in the older patent US-A=4.892.152 of the applicant. Although the cutting head 5 is capable of cutting out grass sods with a breadth of 48 inches, 120 cm or for instance 1 meter, one or more narrower strips of grass can also be cut out with another cutting head. It is possible far the cutting out of grass sods with a conventional breadth to suspend three knives next to each other in the cutting head which are preferably somewhat moveable relative to each other. Suspending is preferably such that with three knives next to each other an equal force is exerted on the knives by the weight of the holder or the cutting head frame.
In the frame 2, a first conveyor 6 is secured behind the cutting head for transporting the grass sods upwards from the cutting head (see arrow W). A second conveyor 7 is also secured on the frame 2 which in the position shown in figures 1 and 2 connects to the conveyor 6 and transports the grass sods further in an upwards direction (arrow B) whereafter these are transported downwards between these conveyors 8 or 9, which both form part of the second conveyor 7, and are stacked on a pallet P. The pallet P is shifted onto a fork 10, which is secured to a frame part 11, which according to arrow C is moveable WO 95/02317 PCT/NL94/001~
4 in an upwards and~downwards direction in accordance with the height of the grass sods G already stacked. The part conveyors 8 and 9 are swivelable to and fro, as depicted by broken arrow D, by means of a hydraulicly operable plunger ' 13 so that the grass sods are stacked onto pallet P in a zig-zag manner. A grass sod stacked in such a zig-zag manner ' can be lain out by simply pulling on the upperside thereof, if the strength of the grass sod allows this.
In a further not shown manner, an approaching sensor is for instance mounted on the underside of one of the conveyors 8, 9 which is workably connected with a schematically shown device 14 for lowering the fork 10 and thereby the pallet P with regularity, so that the distance between the underside of the part conveyors 8, 9 and the upper side of the grass sod G remains roughly constant.
It will be clear that the conveying speed of the conveyors 6, 7 respectively as well as the part conveyors 8, 9 respectively which make up part of conveyor 7 are synchronized with each other.
In the position shown in figure 3 of the embodiment 1 of the present invention, the conveyor 6 is brought into a low position by means of hydraulic cylinders 20, 21 and there behind are two help conveyors 22 in the transporting direction of the conveyor 6. In this position of the apparatus, the first conveyor 6 and the part conveyors 22 and 23 belonging thereto work together with the part conveyors 8 and 9 which belong to the second conveyor 7. In figure 3 is, above all, schematically depicted how with the aid of a driving belt 24, of which the length by means of an adjusting member 25 secured to the frame 26, is adjustable, the synchronization of the driving of the conveyors takes place. The part conveyors 8 and 9 are driven ' via the driving belt 24 and the fixed head part of the second conveyor 7 whilst the help conveyors 22 and 23 are ' driven via driving belt 24 and the head part of the first conveyor 6.
In figure 2, the help conveyors 22, 23 are respectively folded away under the main part of the first ~O 95/02317 . ~~ PCT/NL94/00159 conveyor 6 and the driving belt 24 is so adjusted, with the aid of the adjusting element 25, that synchronization again takes place between the first and second conveyors 6, 7 respectively.
In a further not shown manner, an approaching sensor is for instance mounted on the underside of one of the conveyors 8, 9 which is workably connected with a schematically shown device 14 for lowering the fork 10 and thereby the pallet P with regularity, so that the distance between the underside of the part conveyors 8, 9 and the upper side of the grass sod G remains roughly constant.
It will be clear that the conveying speed of the conveyors 6, 7 respectively as well as the part conveyors 8, 9 respectively which make up part of conveyor 7 are synchronized with each other.
In the position shown in figure 3 of the embodiment 1 of the present invention, the conveyor 6 is brought into a low position by means of hydraulic cylinders 20, 21 and there behind are two help conveyors 22 in the transporting direction of the conveyor 6. In this position of the apparatus, the first conveyor 6 and the part conveyors 22 and 23 belonging thereto work together with the part conveyors 8 and 9 which belong to the second conveyor 7. In figure 3 is, above all, schematically depicted how with the aid of a driving belt 24, of which the length by means of an adjusting member 25 secured to the frame 26, is adjustable, the synchronization of the driving of the conveyors takes place. The part conveyors 8 and 9 are driven ' via the driving belt 24 and the fixed head part of the second conveyor 7 whilst the help conveyors 22 and 23 are ' driven via driving belt 24 and the head part of the first conveyor 6.
In figure 2, the help conveyors 22, 23 are respectively folded away under the main part of the first ~O 95/02317 . ~~ PCT/NL94/00159 conveyor 6 and the driving belt 24 is so adjusted, with the aid of the adjusting element 25, that synchronization again takes place between the first and second conveyors 6, 7 respectively.
5 It is also shown in figure 4 that the driving of the first conveyor 6 and second conveyor 7 is synchronized by means of the driving belt 24. A schematically depicted driving belt 40 is also seen in figure 4 which guarantees the synchronization of the conveyors 8 and 9 with the first conveyor 6. For the hydraulic steering of the diverse drivers, a hydraulic system is preferably used, which preferably makes use of a power take off 41 of a further not shown pulley.
In a manner already known, a hydraulic unit 42 is connected thereon, with which the driving of the diverse driving belts and other hydraulic cylinders depicted in figure 4 is taken care of. The to and fro movement of the part conveyors 8 and 9 via plunger 13 and the therewith belonging cylinder 42 is of particular importance. In the shown example of the embodiment a pulley 44, along which the driving belt 40 is guided, is workably coupled with a hydraulic operating member 45 for operating plunger 13 via the hydraulic cylinder 43.
The cutting head 5 is shown in more detail in figure 5 so as it is placed in the frame 2 in the embodiments shown in figures 1-4. This cutting head is, apart from the large breadth thereof for cutting out of earlier mentioned breadths of 120 cm, in many ways similar to the cutting head as shown and described in the earlier mentioned American patent of the applicant. With the aid of adjusting means, schematically depicted by 51, a knife 52 is, according to arrow I with respect to a roll 53, adjustable for adjusting the thickness of a sod to be cut.
On the front side of the frame a vertically moveable knife 53 is also mounted which determines the length of grass sod to be cut during operation. It is also conceivable to place a cutting-off knife near to the first or second conveyor for cutting off of the sod length.
WO 95/02317 PCT/NL94/001~
In a manner already known, a hydraulic unit 42 is connected thereon, with which the driving of the diverse driving belts and other hydraulic cylinders depicted in figure 4 is taken care of. The to and fro movement of the part conveyors 8 and 9 via plunger 13 and the therewith belonging cylinder 42 is of particular importance. In the shown example of the embodiment a pulley 44, along which the driving belt 40 is guided, is workably coupled with a hydraulic operating member 45 for operating plunger 13 via the hydraulic cylinder 43.
The cutting head 5 is shown in more detail in figure 5 so as it is placed in the frame 2 in the embodiments shown in figures 1-4. This cutting head is, apart from the large breadth thereof for cutting out of earlier mentioned breadths of 120 cm, in many ways similar to the cutting head as shown and described in the earlier mentioned American patent of the applicant. With the aid of adjusting means, schematically depicted by 51, a knife 52 is, according to arrow I with respect to a roll 53, adjustable for adjusting the thickness of a sod to be cut.
On the front side of the frame a vertically moveable knife 53 is also mounted which determines the length of grass sod to be cut during operation. It is also conceivable to place a cutting-off knife near to the first or second conveyor for cutting off of the sod length.
WO 95/02317 PCT/NL94/001~
6 Punch elements 55 are placed in front of the roll 43 and under the knife 52 on the frame part 54 which punches a relatively small part of the grass land into the ground before a grass sod is cut out of the grass land. Under certain climatological circumstances is it sufficient that such relatively small parts of the grass land remain behind so that the grass land does not need to be further sown. It is also conceivable under these climatological circumstances and suitable grass sorts therefor, to leave behind small grass strips in the grass land wherefrom a complete grass land then grows.
Concerning the cutting head 5 it is important to note that this is easily interchangeable and that it can thus just as readily with the shown and described preferred embodiment of the apparatus according to the present invention, cut out narrower strips of grass according to the requirements, and transport these via the ,first conveyor of the cutting heads up and away. It is preferable then that each knife, for the cutting out of the narrower grass sods, is suspended independently in the cutting head so that each cutting head can follow possible irregularities in the level of the grass land and cut out sods of as much as possible consistent thickness.
Because the second conveyor 7 is also easily interchangeably secured in the frame, it is for both broader and narrower grass strips possible to determine the manner of stacking onto the pallets according to the wishes of the customer. The narrow or broad grass strips can, according to wishes, by means of a vertically moveable knife such as the knife 56 in figure 5, be cut out with a determined length.
The second conveyor can for instance be made up of two or three conveyors mounted above each other which are successively provided with a grass sod, due to the fact that the first conveyor 1 is moved up and down to a certain ' extent, whereafter each of the part conveyors can bring a smaller or bigger grass sod, whether or not folded, onto a pallet.
'O 95/02317 . PCT/NL94/00159 t
Concerning the cutting head 5 it is important to note that this is easily interchangeable and that it can thus just as readily with the shown and described preferred embodiment of the apparatus according to the present invention, cut out narrower strips of grass according to the requirements, and transport these via the ,first conveyor of the cutting heads up and away. It is preferable then that each knife, for the cutting out of the narrower grass sods, is suspended independently in the cutting head so that each cutting head can follow possible irregularities in the level of the grass land and cut out sods of as much as possible consistent thickness.
Because the second conveyor 7 is also easily interchangeably secured in the frame, it is for both broader and narrower grass strips possible to determine the manner of stacking onto the pallets according to the wishes of the customer. The narrow or broad grass strips can, according to wishes, by means of a vertically moveable knife such as the knife 56 in figure 5, be cut out with a determined length.
The second conveyor can for instance be made up of two or three conveyors mounted above each other which are successively provided with a grass sod, due to the fact that the first conveyor 1 is moved up and down to a certain ' extent, whereafter each of the part conveyors can bring a smaller or bigger grass sod, whether or not folded, onto a pallet.
'O 95/02317 . PCT/NL94/00159 t
7 In figure 6 a grass sod G, folded in a zig-zag manner, on a pallet P is shown, i.e. the final product of the preferred embodiment shown in figure 1 of the present invention in the position as shown in figure 1 and 2. A
large roll 70 is obtained with the apparatus according to the present invention in the position as shown in figure 2.
In figure 8 cut out grass sods G' with a breadth of 120 cm for example are repeatedly stacked onto each other.
Depending on the embodiment of the second conveyor and cutting head, a large number of stacking methods are possible however, a number of the important ones being mentioned below:
- the continuous so called "big slab", shown in figure 6, - the so called "big roll", shown in figure 7, - the loose slabs shown in figure 8, - a repeatedly one time double folded slab, - a repeatedly double folded half slab, where for instance for the connection the fold is not found half-way in the half slab, or narrower grass strips stacked up next to each other; or - repeatedly somewhat shifted in transverse direction with respect to the driving direction in order to obtain a better connection in the stacking.
It is also possible to wind the grass sods or slabs round and round so that the grassy sides always lie on each other and thus the undersides also lie on each other.
It also appears that with certain grass sorts, the making of big rolls or large stacks of grass sods encompasses problems because of the weakness of such grass sorts. It is conceivable that during the rolling up of the grass sods, or after a few layers in the stacking, a mesh of synthetic material for example can be supplied there between which further improves the connection. Such a synthetic mesh can then be brought into the stacking of a roll from the rear side or under the first or second conveyor. It is expected that it will be possible, with the above described apparatus for cutting and rolling up of large rolls, to WO 95/02317 PCT/NL94/001_
large roll 70 is obtained with the apparatus according to the present invention in the position as shown in figure 2.
In figure 8 cut out grass sods G' with a breadth of 120 cm for example are repeatedly stacked onto each other.
Depending on the embodiment of the second conveyor and cutting head, a large number of stacking methods are possible however, a number of the important ones being mentioned below:
- the continuous so called "big slab", shown in figure 6, - the so called "big roll", shown in figure 7, - the loose slabs shown in figure 8, - a repeatedly one time double folded slab, - a repeatedly double folded half slab, where for instance for the connection the fold is not found half-way in the half slab, or narrower grass strips stacked up next to each other; or - repeatedly somewhat shifted in transverse direction with respect to the driving direction in order to obtain a better connection in the stacking.
It is also possible to wind the grass sods or slabs round and round so that the grassy sides always lie on each other and thus the undersides also lie on each other.
It also appears that with certain grass sorts, the making of big rolls or large stacks of grass sods encompasses problems because of the weakness of such grass sorts. It is conceivable that during the rolling up of the grass sods, or after a few layers in the stacking, a mesh of synthetic material for example can be supplied there between which further improves the connection. Such a synthetic mesh can then be brought into the stacking of a roll from the rear side or under the first or second conveyor. It is expected that it will be possible, with the above described apparatus for cutting and rolling up of large rolls, to WO 95/02317 PCT/NL94/001_
8 leave a pipe or rod in the heart of the roll because this is not needed for rolling up, when the strength of the grass sod allows this. In the other case the required strength and connection can be obtained by the taking up of mesh on the outer side or possibly between the layers of grass in the roll.
It will be clear that the cutting apparatus according to the present invention makes possible a great deal of new possibilities concerning the desired supply of grass sods. Deciding factors far the requirements of a grass sod grower concern the working costs for laying down of the grass sods, the strength of the grass sods, which apart from the sort of sown grass, is also related to the climatological circumstances as well as the requirements of the customers which can also be based on a certain ingrained practice.
From the above it will be clear that the requested rights are in no way limited by the depicted and described preferred embodiments of the present invention. The requested rights are determined by the here following claims.
Concerning this, it is of importance to note that with a cutting head and a conveyor for a broad grass sod, stacking and/or rolling up mechanisms can be coupled thereto in many ways. When two conveyors, taking a V-form, are placed on the rear side of the conveyor a large roll can be rolled there between whilst transport bands are possibly associated on the upperside for letting the roll, roll easily out. The V-like transport bands are preferably set up in such a way that the large roll can be taken up between the V-like transport bands, which are moveable thereto, set up so that they can be moved under the rolled up grass. Such an apparatus does also not need to be suitable for the stacking of to and fro moving grass sods, also called big slabs.
In a similar manner it is conceivable to provide an apparatus which is only suitable for the stacking of broad strips of grass in a to and fro manner, or in the form ~O 95/02317 . PCT/NL94/00159
It will be clear that the cutting apparatus according to the present invention makes possible a great deal of new possibilities concerning the desired supply of grass sods. Deciding factors far the requirements of a grass sod grower concern the working costs for laying down of the grass sods, the strength of the grass sods, which apart from the sort of sown grass, is also related to the climatological circumstances as well as the requirements of the customers which can also be based on a certain ingrained practice.
From the above it will be clear that the requested rights are in no way limited by the depicted and described preferred embodiments of the present invention. The requested rights are determined by the here following claims.
Concerning this, it is of importance to note that with a cutting head and a conveyor for a broad grass sod, stacking and/or rolling up mechanisms can be coupled thereto in many ways. When two conveyors, taking a V-form, are placed on the rear side of the conveyor a large roll can be rolled there between whilst transport bands are possibly associated on the upperside for letting the roll, roll easily out. The V-like transport bands are preferably set up in such a way that the large roll can be taken up between the V-like transport bands, which are moveable thereto, set up so that they can be moved under the rolled up grass. Such an apparatus does also not need to be suitable for the stacking of to and fro moving grass sods, also called big slabs.
In a similar manner it is conceivable to provide an apparatus which is only suitable for the stacking of broad strips of grass in a to and fro manner, or in the form ~O 95/02317 . PCT/NL94/00159
9 of so called big slabs. The first and second conveyors can then be set up as one passing through conveyor.
Due to the interchanging of the cutting head, such an apparatus can be easily made suitable for cutting out of narrow grass sods according to the requirements of the user of the apparatus. An important new aspect here is that with narrower grass sods a strip of grass can be left behind on the grass land, because under certain climatological circumstances the sowing of new grass need not be carried out because new grass land can form from the grass strip left behind. With narrow grass strips the conveyor can be provided with discs or baffle plates in order to bring the narrow grass strips into the desired mutual positions on the broad conveyor.
Due to the interchanging of the cutting head, such an apparatus can be easily made suitable for cutting out of narrow grass sods according to the requirements of the user of the apparatus. An important new aspect here is that with narrower grass sods a strip of grass can be left behind on the grass land, because under certain climatological circumstances the sowing of new grass need not be carried out because new grass land can form from the grass strip left behind. With narrow grass strips the conveyor can be provided with discs or baffle plates in order to bring the narrow grass strips into the desired mutual positions on the broad conveyor.
Claims (31)
1. A method for cutting out and stacking up of one or more grass sods wherein a first substantially flat part of a grass sod is placed onto a holder therefor, whereafter the grass sod is folded up and a second substantially flat part of the grass sod is placed onto the first part, so that a continuously running grass sod is stacked in a zig-zag manner, comprising at least two folds of the grass sod.
2. Method according to claim 1, wherein the grass sod is folded up at least twice.
3. Method according to claim 1 or 2, wherein the grass sod has a breadth of about 60 to 120 cm.
4. Apparatus for cutting grass sods out of grass land and for stacking a predetermined amount of one or more grass sods in a zig-zag manner, comprising:
- a frame provided with two or more wheels suspended thereon;
- a cutting head suspended in the frame for cutting under the grass sods;
- a first conveyor which is mounted on the frame in driving direction as seen from behind the cutting head and which repeatedly transports the grass sods from the cutting head in an upwards direction;
- a second conveyor mounted on the frame in a driving direction as seen from behind the first conveyor and whereof at least one part is moveable with respect to the first conveyor and another part to the second conveyor.
- a frame provided with two or more wheels suspended thereon;
- a cutting head suspended in the frame for cutting under the grass sods;
- a first conveyor which is mounted on the frame in driving direction as seen from behind the cutting head and which repeatedly transports the grass sods from the cutting head in an upwards direction;
- a second conveyor mounted on the frame in a driving direction as seen from behind the first conveyor and whereof at least one part is moveable with respect to the first conveyor and another part to the second conveyor.
5. Apparatus for cutting grass sods out of grass land and for stacking a predetermined amount of one or more grass sods in a zig-zag manner, comprising:
- a frame provided with two or more wheels suspended thereon;
- a cutting head suspended in the frame for cutting under the grass sods;
- a first conveyor which is mounted on the frame in driving direction as seen from behind the cutting head and which repeatedly transports the grass sods from the cutting head in an upwards direction;
- a second conveyor mounted on the frame in a driving direction as seen from behind the first conveyor and whereof at least one part is moveable with respect to the first conveyor or another part to the second conveyor.
- a frame provided with two or more wheels suspended thereon;
- a cutting head suspended in the frame for cutting under the grass sods;
- a first conveyor which is mounted on the frame in driving direction as seen from behind the cutting head and which repeatedly transports the grass sods from the cutting head in an upwards direction;
- a second conveyor mounted on the frame in a driving direction as seen from behind the first conveyor and whereof at least one part is moveable with respect to the first conveyor or another part to the second conveyor.
6. Apparatus according to claim 4 or claim 5, which is provided on the front side with a shaft for coupling to a pulley.
7. Apparatus according to any one of claims 4 to 6, wherein two of the wheels provided with relatively broad tires, are rotatably associated on both sides of the outer side of the frame.
8. Apparatus according to any one of claims 4 to 7, wherein the breadth of the conveyor is at least about 48 inches or 120 cm.
9. Apparatus according to any one of claims 4 to 8, wherein the cutting head is provided with two or more cutting knives arranged to move with respect to each other.
10. Apparatus according to any one of claims 4 to 9, wherein the first conveyor in a first high position connects onto the second conveyor and in the second low position connects onto a help conveyor belonging to the first conveyor for conveying the grass sods under the second conveyor.
11. Apparatus according to any one of claims 4 to 10, wherein the second conveyor is provided with a moveable to and fro part conveyor on the rear side thereof, which extends downwardly and which stacks the grass sods passing through in a zig-zag manner.
12. Apparatus according to any one of claims 4 to 11, wherein the first conveyor is provided with one or more help conveyors for repeatedly conveying the grass sods backwards at a lower level than the second conveyor.
13. Apparatus according to any one of claims 4 to 12, wherein the conveyor is provided with displacing means such as baffles or discs for the displacing of the grass sods towards each other or away from each other during the transporting upwards of the grass sods.
14. Apparatus according to any one of claims 4 to 13, comprising a receiving device made up of two downwardly pointing conveyors which mutually form an acute angle of about 45° where between, in the first position, the grass sod is rolled up and where, in a second position, the rolled up grass sod can be unloaded onto a pallet or such like.
15. Method according to any one of claims 1 to 3, wherein the grass sods are provided with a protecting layer of for instance synthetic mesh on the outerside and/or between the layers.
16. A method for cutting out and stacking on a holder supported by a holder supporting means, at least one grass sod having a first part and a second part, the method comprising the steps of:
(a) moving in a first direction a reciprocating conveyor utilized to transport the at least one grass sod to the holder;
(b) placing on the holder during movement of the conveyor in the first direction the first part of the grass sod;
(c) moving the conveyor in a second direction opposite the first direction;
(d) folding the grass sod; and (e) placing on the holder during movement of the conveyor in the second direction the second part of the grass sod.
(a) moving in a first direction a reciprocating conveyor utilized to transport the at least one grass sod to the holder;
(b) placing on the holder during movement of the conveyor in the first direction the first part of the grass sod;
(c) moving the conveyor in a second direction opposite the first direction;
(d) folding the grass sod; and (e) placing on the holder during movement of the conveyor in the second direction the second part of the grass sod.
17. A method according to claim 16, wherein the grass sod is folded at least twice and the height of holder supporting means is adjusted with the placing of the grass sod on the holder.
18. A method according to claim 16, wherein the grass sod has a breadth of about 60 to 120 cm.
19. An apparatus for cutting grass sods out of grass land and for at least one of stacking and rolling the grass sods, comprising:
a frame having a plurality of wheels mounted thereon;
a cutting head carried on the frame for cutting under the grass sods;
a first conveyor mounted on the frame behind the cutting head and which repeatedly transports the grass sods from the cutting head in an upwards direction;
a second conveyor mounted on the frame behind the first conveyor; and a holder supporting means secured to the frame, wherein:
the second conveyor comprises a fixed part and a moveable part; and the moveable part of the second conveyor is moveable reciprocatingly over a surface of a holder positioned on the holder supporting means.
a frame having a plurality of wheels mounted thereon;
a cutting head carried on the frame for cutting under the grass sods;
a first conveyor mounted on the frame behind the cutting head and which repeatedly transports the grass sods from the cutting head in an upwards direction;
a second conveyor mounted on the frame behind the first conveyor; and a holder supporting means secured to the frame, wherein:
the second conveyor comprises a fixed part and a moveable part; and the moveable part of the second conveyor is moveable reciprocatingly over a surface of a holder positioned on the holder supporting means.
20. An apparatus according to claim 19, having a front side and wherein the apparatus is provided with a shaft on the front side for coupling to a puller.
21. An apparatus according to claim 19, having two wheels provided with tires which are rotatably positioned on both sides of an outer side of the frame.
22. An apparatus according to claim 19, wherein a breadth of at least one of the first and second conveyors is at least about 48 inches.
23. An apparatus according to claim 19, wherein the cutting head includes at least two cutting knives arranged to move with respect to each other.
24. An apparatus for cutting grass sods out of grass land and for at least one of the stacking and rolling the grass sods, comprising:
a frame having a plurality of wheels mounted thereon;
a cutting head carried on the frame for cutting under the grass sods;
a first conveyor mounted on the frame behind the cutting head which repeatedly transports the grass sods from the cutting head in an upwards direction;
a second conveyor mounted on the frame behind the first conveyor wherein:
the second conveyor comprises a fixed part and a moveable part; and the first conveyor in a first position connects onto the second conveyor and in a second position connects onto an auxiliary conveyor belonging to the first conveyor for conveying the grass sods under the second conveyor and for forming a roll of grass sods with the help of at least one of the fixed part and the moveable part of the second conveyor.
a frame having a plurality of wheels mounted thereon;
a cutting head carried on the frame for cutting under the grass sods;
a first conveyor mounted on the frame behind the cutting head which repeatedly transports the grass sods from the cutting head in an upwards direction;
a second conveyor mounted on the frame behind the first conveyor wherein:
the second conveyor comprises a fixed part and a moveable part; and the first conveyor in a first position connects onto the second conveyor and in a second position connects onto an auxiliary conveyor belonging to the first conveyor for conveying the grass sods under the second conveyor and for forming a roll of grass sods with the help of at least one of the fixed part and the moveable part of the second conveyor.
25. An apparatus according to claim 19, wherein the moveable part of the second conveyor includes a pivotable conveyor which extends downwardly and which stacks the grass sods passing therethrough in a zig-zag manner.
26. An apparatus according to claim 19, wherein the first conveyor includes at least one auxiliary conveyor for repeatedly conveying the grass sods backwards at a lower level than the second conveyor.
27. An apparatus for cutting grass sods out of grass land and for stacking to a predetermined quantity at least one grass sod, comprising:
a frame having two or more wheels;
a cutting head carried on the frame for cutting the grass sods therebeneath;
a conveyor mounted on the frame behind the cutting head for repeatedly transporting the sods upwards from the cutting head;
a holder supporting means secured to the frame;
and a reciprocating member secured to an end of the conveyor and over the holder supporting means for stacking the grass sods in a to and fro movement downwards from the conveyor onto a storage holder positioned on the holder supporting means.
a frame having two or more wheels;
a cutting head carried on the frame for cutting the grass sods therebeneath;
a conveyor mounted on the frame behind the cutting head for repeatedly transporting the sods upwards from the cutting head;
a holder supporting means secured to the frame;
and a reciprocating member secured to an end of the conveyor and over the holder supporting means for stacking the grass sods in a to and fro movement downwards from the conveyor onto a storage holder positioned on the holder supporting means.
28. An apparatus for cutting grass sods out of grass land and stacking to a predetermined quantity the grass sods, comprising:
a frame having at least two wheels;
a cutting head carried on the frame and which is provided with a plurality of knives for cutting the grass sods beneath the cutting head;
a conveyor mounted on the frame behind the cutting head for repeatedly transporting the grass sods upwards from the cutting head, wherein the conveyor is provided with displacing means for displacing the grass sods at least one of towards and away from each other during the transporting upwards of the grass sods.
a frame having at least two wheels;
a cutting head carried on the frame and which is provided with a plurality of knives for cutting the grass sods beneath the cutting head;
a conveyor mounted on the frame behind the cutting head for repeatedly transporting the grass sods upwards from the cutting head, wherein the conveyor is provided with displacing means for displacing the grass sods at least one of towards and away from each other during the transporting upwards of the grass sods.
29. An apparatus for cutting grass sods out of grass land and collecting a predetermined quantity of grass sods, comprising:
a frame provided with at least two wheels suspended thereon;
a cutting head suspended in the frame and which serves for cutting the grass sods therebeneath;
a conveyor mounted on the frame behind the cutting head and which serves for repeatedly transporting the grass sods upwards from the cutting head;
a receiving device including two downwardly pointing conveyors which mutually form an acute angle therebetween, wherein in a first position, the grass sod is rolled up and wherein a second position the rolled up grass sod is unloaded onto a pallet.
a frame provided with at least two wheels suspended thereon;
a cutting head suspended in the frame and which serves for cutting the grass sods therebeneath;
a conveyor mounted on the frame behind the cutting head and which serves for repeatedly transporting the grass sods upwards from the cutting head;
a receiving device including two downwardly pointing conveyors which mutually form an acute angle therebetween, wherein in a first position, the grass sod is rolled up and wherein a second position the rolled up grass sod is unloaded onto a pallet.
30. The apparatus as claimed in claim 28, wherein the displacing means is selected from the group consisting of baffles and discs.
31. A method for cutting out and stacking grass sods having a desired breadth, the method comprising the steps of:
placing a first substantially flat part of grass sod onto a height adjustable holder therefor;
folding the grass sod;
placing a second substantially flat part of the grass sod onto the first part such that a continuously running grass sod is stacked in a zig-zag manner with the grass sod having at least two folds; and adjusting the height of the holder as the grass sod is stacked in the zig-zag manner.
placing a first substantially flat part of grass sod onto a height adjustable holder therefor;
folding the grass sod;
placing a second substantially flat part of the grass sod onto the first part such that a continuously running grass sod is stacked in a zig-zag manner with the grass sod having at least two folds; and adjusting the height of the holder as the grass sod is stacked in the zig-zag manner.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL9301218 | 1993-07-12 | ||
| NL9301218A NL9301218A (en) | 1993-07-12 | 1993-07-12 | Device for cutting one or more turf and method for stacking it. |
| PCT/NL1994/000159 WO1995002317A1 (en) | 1993-07-12 | 1994-07-12 | Apparatus for the cutting of one or more grass sods and a method for the stacking thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2166990A1 CA2166990A1 (en) | 1995-01-26 |
| CA2166990C true CA2166990C (en) | 2005-11-15 |
Family
ID=35520896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002166990A Expired - Fee Related CA2166990C (en) | 1993-07-12 | 1994-07-12 | Apparatus for the cutting of one or more grass sods and a method for the stacking thereof |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2166990C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114946543B (en) * | 2022-06-08 | 2023-07-04 | 交通运输部科学研究院 | Turf block stockpiling protection method and application |
-
1994
- 1994-07-12 CA CA002166990A patent/CA2166990C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2166990A1 (en) | 1995-01-26 |
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