CA1218393A - Machine for spreading granular material pneumatically - Google Patents
Machine for spreading granular material pneumaticallyInfo
- Publication number
- CA1218393A CA1218393A CA000410479A CA410479A CA1218393A CA 1218393 A CA1218393 A CA 1218393A CA 000410479 A CA000410479 A CA 000410479A CA 410479 A CA410479 A CA 410479A CA 1218393 A CA1218393 A CA 1218393A
- Authority
- CA
- Canada
- Prior art keywords
- machine according
- storage tank
- travel
- blower
- drive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/08—Broadcast seeders; Seeders depositing seeds in rows
- A01C7/081—Seeders depositing seeds in rows using pneumatic means
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C15/00—Fertiliser distributors
- A01C15/04—Fertiliser distributors using blowers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Fertilizing (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A machine for spreading granular material pneumatic-ally, the said machine being in the form of a trailer and be-ing equipped with a central storage tank and with pipelines, some of which project considerably beyond the said storage tank at right angles to the direction of travel, to which material is metered from the said storage tank by metering devices driven by variable speed drives, the said storage tank being divided into two parts, at least in its lower area, by a roof shaped central part. In order to maintain the compact design of the machine, to keep the centre of gravity thereof close to the tractor, to obtain a storage tank of the largest possible capacity and, at the same time, achieve wide scatter paths, provision is made for a blower 7 to be located at least mainly under the roof shaped central part, and for the drive shaft 15 of the said blower to be located on the side of the blower facing the direction of travel, the drive elements 15 ... 24 being arranged mainly under the said roof shaped central part, while the metering elements 12, as seen in the direction of travel 8, extend approximately along the entire lower length of the said tank.
A machine for spreading granular material pneumatic-ally, the said machine being in the form of a trailer and be-ing equipped with a central storage tank and with pipelines, some of which project considerably beyond the said storage tank at right angles to the direction of travel, to which material is metered from the said storage tank by metering devices driven by variable speed drives, the said storage tank being divided into two parts, at least in its lower area, by a roof shaped central part. In order to maintain the compact design of the machine, to keep the centre of gravity thereof close to the tractor, to obtain a storage tank of the largest possible capacity and, at the same time, achieve wide scatter paths, provision is made for a blower 7 to be located at least mainly under the roof shaped central part, and for the drive shaft 15 of the said blower to be located on the side of the blower facing the direction of travel, the drive elements 15 ... 24 being arranged mainly under the said roof shaped central part, while the metering elements 12, as seen in the direction of travel 8, extend approximately along the entire lower length of the said tank.
Description
~Z~ 3 The present invention relates to a machine for spreading granular material pneumatically, the said machine being in the form of a trailer and being equipped with a cen-tral storage tank and with pipelines, some of which project considerably beyond the said storage tank at right angles to the direction of travel, the said pipelines being connected by at least one air-duct to at least one blower located on the machine and driven from the take-off shaft of the engine driving the tractor, material from the storage tank being fed to the pipelines through outlet apertures and by variable speed drive metering devices, the said pipelines comprising outlet apertures at their outer ends which are arranged at right angles to the direction of travel and spaced from each other, the said storage tank being divided into two parts, at least in its lower area, by a roof-shaped central part, the said parts of the tank being equipped with outlet apertures and metering devices arranged at least approximately horizont-ally and in series one behind the other, as seen in the direc-tion of travel, A machine of this kind is already known from German Patent 26 09 686. This machine is characterized above all by its compact design and the fact that the centre of gravity thereof is near the tractor, which means that small tractors can raise the machine without inadmissibly removing the load from the front wheels of the tractor.
However, the disadvantage of this known machine is that the blower is located in front of and below the storage tank. This limits the capacity of the said tank. At the same time, incomplete utilization of the said tank on the side facing the tractor, for the accommodation of material to be spread, makes it impossible to advance the overall centre of gravity of the machine optimally towards the tractor.
In addition to this, the fact that the blower is arranged in - 1- ~j '~
3~3 the storage tank means that the length available for the meter-ing elements, in relation to the total length of the storage tank in the front area, is substantially limited and that the arrangement of the said metering elements starts only after the blower. As a result of this, the pipelines are also dis-placed rearwardly and the weight thereof thus affects the location of the overall centre of gravity negatively.
As a result of the limited length available for the metering elements, only a small number of pipelines can be accommodated, since the large cross-section of the pipelines must be maintained. Only with a large pipe-cross-section can the flow resistance of the air be kept low enough to ensure a uniform scatter-pattern at the outer edges of the scatter width of the machine.
Since only a small number of pipelines can be accom-modated, the scatter width of the known machine is only about 12 m. In the case of a machine having an operating width of this order, however, the capacity of the machine and the lo-cation of the centre of gravity are quite satisfactory. But as soon as greater operating widths and larger tank capacities are required, the overall centre of gravity shifts irresponsi-bly to the rear.
~ow it is the aim of the present invention to im-prove the known machine in such a manner as to maintain the compact design of the machine and the centre of gravity near the tractor, while achieving the largest possible storage tanks capacity and larger scatter widths.
According to the invention, this purpose is achieved by providing a machine for spreading granular material pneu-maticall~, the said machine being in the form of a trailer and being equipped with a central storage tank and with pipe-lines, some of which project considerably beyond the said 33~3 storage tank at right angles to the direction of travel, the said pipelines being connected by at least one air duct to at Least one blower located on the machine and driven from the take off shaft of the engine driving the tractor, material from the storage tank being fed to the pipelines through out-let apertures and by variable speed drive metering devices, the said pipelines comprising outlet apertures at their outer ends which are arranged at right angles to the direction of travel and spaced from each other, the said storage tank being divided into two parts, at least in its lower area, by a roof shaped central part, the said parts of the tank being equipped with outlet apertures and metering devices arranged at least approximately horizontally and in series one behind the other, as seen in the direction of travel, characterized in that the blower, or blowers, are arranged at least mainly below the roof shaped central part and in that the drive shaft of the said blower is located on the side thereof facing the direction of travel; in that the drive elements for the said blowers and also for the metering elements, are arrang~d substantially under the roof shaped central part and in an area which is defined, as seen in the direction of travel, by the said roof shaped central part, and in that the said meter-ing elements extend at least approximately over the entire lower length of the said roof shaped central part of the tan~.
This results in a storage tank of the same length but greater capacity, with adequate room for the necessary accommodation of a large number of metering elements and pipelines for scatter widths of between 18 and 24 m, the machine still possessing an optimally located overall centre of gravity.
Furthermore, arranging the blower under the roof shaped central part results in a substantial decrease in blower noise. The sound waves produced by the blower do not reach the tractor ~;~183~
driver's ear directly. Furthermore, the drive elements are accommodated in a protected area.
Arranging the blower under the roof shaped central part makes it a simple matter to arrange a plurality of blow-ers one behind the other, with no disadvantageous change in the location of the centre of gravity or decrease in capacity.
It is desirable to arrange the said blowers in such a manner that they are in alignment with each other, in which case they may be arranged upon a col~mon shaft.
According to a preferred example of embodiment, a countershaft is arranged in front of the blower, the said countershaft comprising, in an advantageous manner, two input shafts arranged approximately vertically one below the other.
This makes it possible to operate the blower at different r.p.m. in order to achieve different blower outputs adapted to different scatter widths and to the type of material to be spread. Furthermore, the arrangement according to the inven-tion of the input shafts results in only a small angle to the universal shaft connecting the said input shafts to the tractor take off shaft.
Since the blower drive is arranged, as seen in the direction of travel, in front of the blowers, while the metering elements drive is arranged behind the blowers, both drives are freely accessible.
A storage tank of optimal width is obtained in that the width thereof, at right angles to the direction of travel, including twice the thickness of the booms with the pipelines, corresponds to the permissible overall width for agricultural vehicles travelling on public streets and highways.
Finally, the invention provides for a blower with a drive shaft and drive elements to be arranged upon a support-ing frame, for the said frame to be secured deta^hably to the 3~
storage tank and to be provided, on its front face, with three point coupling elements.
This makes it a very simple matter to separate the storage tank and the drive elements with the blowers from each other, thus making the said drive elements freely accessible.
The configuration according to the invention also makes it possible, after loosening a few bolts, to pull forward the drive elements and blowers mounted upon the supporting frame fitted with three point couplings, with the tractor, under the storage tank.
Further details of the invention may be gathered from the specification, and the drawings attached hereto, which describe and illustrate by way of example the invention, wherein:
Figure 1 is a rear elevation of the machine according to the invention, with the booms folded in, Figure 2 is a plan view in part section of the same machine:
Figure 3 is a rear elevation of another machine 20 - according to the invention;
Figure 4 is a side elevation of the same machine, Figure 5 shows another machine, also in side eleva-tion' Figure 6 shows a cover over the drive elements on the rear side of the machine;
Figure 7 is a rear elevation of another machine with folded booms, Figure 8 is a front elevation of the machine accord-ing to the invention;
Figure 9 is a side elevation of the machine according to Figure 8, and Figure 10 shows the supporting frame pulled forward -~L21~33~3 under the storage tank.
Referring in detail to the drawings.
The maching is equipped with a central storage tank 1 which is divided, mainly in its lower area, into two parts, by a roof shaped central part 2, Located under the said storage tank, on both sides, are twelve pipelines 3 which, for reasons of stability are arranged in booms ~. The said pipelines are connected to an air duct 5 into which pressure pipes 6 of blowers 7 open. ~ach ten pipelines 3 project be-yond the storage tank at right angles to direction of travel 8, the outer rearwardly pointing ends of the said pipelines, arranged at right angles to the direction of travel and spaced at intervals of 75 cm from each other, being equipped with an outflow aperture. Located in front of the outflow apertures are deflector plates 9 which slope obliquely downwards and deflect the particles of material blown out of the outflow apertures to the ground. In this connection, the width of the lower end of the roof shaped central part is about half the width B of the storage tank.
The material in storage tank 1 passes through out-let apertures 10 to metering device 11, metering element 10 thereof, in the form of cam wheels, passing the said material, through inlet hopper 13, to pipelines 3, the inlets to which are fitted with injectors in a manner known per se and there-fore not shown. Metering elements 12 extend, as seen in the direction of travel 8, over the entire lower length L of the storage tank~ Thus the whole of the available length L of the storage tank, less the width of the drive wheels 14 arranged at metering elements 12, and of the metering elements drive, is utilized.
Under roof shaped central part 2, blowers 7 are arranged in such a manner that they project as little as pos-3`5~3 sible into the storage tank, in order not to reduce the capacity thereof unnecessarily. Front blower 7 is located, as seen approximately in the direction of travel 8, centrally under roof shaped central part 2, while the rear blower is arranged in the rear third of the machine. Drive shafts 15 of blowers 7 are located on the side of blower 7 facing the direction of travel 8, and are mounted upon a common drive shaft 15. ~rranged in front of front blower 7 is a counter-shaft 16 in the form of a V-belt drive with two input shafts 17,18, so that the said blowers may be driven both at differ-ent r.p.m. and with different r.p.m. of the standard tractor take-off shaft. Suction apertures 19 of the blowers are located on the rear side of the blowers.
Metering elernents 12 are driven, from the tractor take-off shaft, through countershaft 16, chain drive 20 (which drives steplessly adjustable eccentric 22 of the vari-able speed drive through shaft 21 arranged laterally below at the side of blower 7), through gear shaft 23 and chain drive 24 located in a cavity 25 in the form of a downwardly open U-shaped rail. The latter extends transversely through the parts of the tank separated by roof shaped central part 2 and is secured to the said tank by welding.
In the examples of embodiment illustrated in Figures 1 to 4, U-shaped rail 25 is arranged behind the second group of metering elements 12 and between the two blowers 7. In the vicinity of suction inlet 19 to front blower 7, rail 25 has an opening, to allow air to reach front blower 7 uninter-ruptedly.
Metering elements 2 are divided into three groups on each side, and can thus be switched on and off by groups.
This is achieved by arranging drive wheels 14 at metering elements 12. Gearwheels 27, located on rockers 2~ and ~Z~13~3 brought into engagement with drive wheels 14 by hydraulic cylinders 28, make it possible to connect the drive to meter-ing elements 12. The drive is disconnected when the said gearwheels are moved away from the drive wheels with the aid of rockers 26 and hydraulic cylinders 28.
Width B of storage tank, at right angles to the direction of travel 8, including twice the thickness D of booms 4 with pipelines 3, corresponds to the permissible over-all width for agricultural vehicles travelling on public streets and highways. Booms 4 are arranged to pivot about axes 29 running in the direction of travel 8 and are divided into a plurality of folding sections 4' and 4". When outer sections 4" are folded for transportation, they are located above storage tank 1.
The example of embodiments illustrated in Figure 3 differs from that in Figure 4 merely in that lower halves 30 of the tank are farther apart, thus allowing more room for blowers 31 which are thus entirely under roof shaped central part 2 and do not project into storage tank 1. Furthermore, input shafts 17 and 18 of countershaft 16 are arranged vertic-ally one above the other. The advantage of this is that lower input shaft 18 can also be used as the drive shaft for eccentric 22 since it runs under blower 31, through to the rear part of the machine.
The machine according to Figure 5 differs from the machines previously described in that U-shaped rail 25 is arranged at the rear side of the machine. The advantage of this is that the rear group of metering elements can be shifted forward by an amount equal to the width of the said U-shaped rail, and booms 4 may also be made somewhat narrower. This also improves the location of the centre of gravity of the machine.
~2~83~
Fitted to the front of storage tank 1 is an attach-ment means 32 for coupling the machine to the three point power hoist on the tractor.
Roof shaped central part 2 is covered with the mobile plate 33 shown in Figure 6, This plate comprises apertures 34 through which air, drawn in by blowers 7,31, can flow.
Width B of storage tank 1 of the machine according to Figure 7, including thickness D of boom parts 4' arranged, for transportation, at the side of storage tan~ 1, corresponds to the legally permissible overall width for agricultural machines travelling on public streets and highways. Booms 4 are arranged to pivot about axes 29 running in the direction of travel and divided into a plurality of folding sections 4' and 4". In the transportation configuration, boom parts 4" are located within the width B of, and above, storage tank 1. Furthermore, only inner boom part 4' is located, when the booms are in the transportation configuration, on each side of the storage tank, as seen in the direction of travel.
The machine according to Figure 8 is equipped with a central storage tank 1, the lower part of which is divided into two parts by a roof-shaped central part 2. The material in the storage tank passes, through the metering elements, into pipelines 3 connected to blowers 31 and, from the outlet ends of the said pipelines it is spread widely over the ground~
Arranged under roof shaped central part 2 are the two blowers 31 with their drive shafts 17 upon supporting frame 35.
Arranged in front of blowers 31 is the countershaft 16, in the form of a V-belt drive with input shafts 17,18. Drive elements 37 for the metering elements are also arranged upon the said supporting frame. The metering elements are driven in known fashion, through a chain drive, by a variable speed ~83~3 drive.
Storage tank 1 of the machine comprises a frame 38 to the underside of which are fitted supports 39 which project downwardly from the machine and thus from supporting frame 35.
By means of bolts 40, supporting frame 35 is secured detach-ably to frame 38 of the storage tank. This allows the said supporting frame, with the parts arranged thereon, to be separated from storage tank 1 and frame 38 thereof, leaving countershaft 16, drive elements 37, and blowers 31 easily accessible for repairs.
To this end, the machine is placed upon ground 41, bolts 40 connecting supporting frame 35 and frame 38 of the storage tank are loosened, and the chain is removed from the chain drive for the metering elements. Supporting frame 35, coupled to the power hoist of the tractor by three point coupling elements 36 and carrying blowers 31 and drive elements 37, is now pulled forward, as seen in the direction of travel, under the storage tank.
This leaves countershaft 16, drive elements 37 and blowers 31 freely accessible, as shown in Figure 10.
After the necessary repairs or maintenance have been completely, supporting frame 35, with blowers 31, is pushed back again under the storage tank with the aid of the tractor, an operation which is facilitated by co-operating guide elements 42 arranged upon supporting frame 35 and frame 38 of the storage tank, since any inaccuracies are compensated for. Supporting frame 35 and frame 38 are then connected to-gether again with bolts 40 and the chain for the metering elements is refitted. The machine is now serviceable once more.
However, the disadvantage of this known machine is that the blower is located in front of and below the storage tank. This limits the capacity of the said tank. At the same time, incomplete utilization of the said tank on the side facing the tractor, for the accommodation of material to be spread, makes it impossible to advance the overall centre of gravity of the machine optimally towards the tractor.
In addition to this, the fact that the blower is arranged in - 1- ~j '~
3~3 the storage tank means that the length available for the meter-ing elements, in relation to the total length of the storage tank in the front area, is substantially limited and that the arrangement of the said metering elements starts only after the blower. As a result of this, the pipelines are also dis-placed rearwardly and the weight thereof thus affects the location of the overall centre of gravity negatively.
As a result of the limited length available for the metering elements, only a small number of pipelines can be accommodated, since the large cross-section of the pipelines must be maintained. Only with a large pipe-cross-section can the flow resistance of the air be kept low enough to ensure a uniform scatter-pattern at the outer edges of the scatter width of the machine.
Since only a small number of pipelines can be accom-modated, the scatter width of the known machine is only about 12 m. In the case of a machine having an operating width of this order, however, the capacity of the machine and the lo-cation of the centre of gravity are quite satisfactory. But as soon as greater operating widths and larger tank capacities are required, the overall centre of gravity shifts irresponsi-bly to the rear.
~ow it is the aim of the present invention to im-prove the known machine in such a manner as to maintain the compact design of the machine and the centre of gravity near the tractor, while achieving the largest possible storage tanks capacity and larger scatter widths.
According to the invention, this purpose is achieved by providing a machine for spreading granular material pneu-maticall~, the said machine being in the form of a trailer and being equipped with a central storage tank and with pipe-lines, some of which project considerably beyond the said 33~3 storage tank at right angles to the direction of travel, the said pipelines being connected by at least one air duct to at Least one blower located on the machine and driven from the take off shaft of the engine driving the tractor, material from the storage tank being fed to the pipelines through out-let apertures and by variable speed drive metering devices, the said pipelines comprising outlet apertures at their outer ends which are arranged at right angles to the direction of travel and spaced from each other, the said storage tank being divided into two parts, at least in its lower area, by a roof shaped central part, the said parts of the tank being equipped with outlet apertures and metering devices arranged at least approximately horizontally and in series one behind the other, as seen in the direction of travel, characterized in that the blower, or blowers, are arranged at least mainly below the roof shaped central part and in that the drive shaft of the said blower is located on the side thereof facing the direction of travel; in that the drive elements for the said blowers and also for the metering elements, are arrang~d substantially under the roof shaped central part and in an area which is defined, as seen in the direction of travel, by the said roof shaped central part, and in that the said meter-ing elements extend at least approximately over the entire lower length of the said roof shaped central part of the tan~.
This results in a storage tank of the same length but greater capacity, with adequate room for the necessary accommodation of a large number of metering elements and pipelines for scatter widths of between 18 and 24 m, the machine still possessing an optimally located overall centre of gravity.
Furthermore, arranging the blower under the roof shaped central part results in a substantial decrease in blower noise. The sound waves produced by the blower do not reach the tractor ~;~183~
driver's ear directly. Furthermore, the drive elements are accommodated in a protected area.
Arranging the blower under the roof shaped central part makes it a simple matter to arrange a plurality of blow-ers one behind the other, with no disadvantageous change in the location of the centre of gravity or decrease in capacity.
It is desirable to arrange the said blowers in such a manner that they are in alignment with each other, in which case they may be arranged upon a col~mon shaft.
According to a preferred example of embodiment, a countershaft is arranged in front of the blower, the said countershaft comprising, in an advantageous manner, two input shafts arranged approximately vertically one below the other.
This makes it possible to operate the blower at different r.p.m. in order to achieve different blower outputs adapted to different scatter widths and to the type of material to be spread. Furthermore, the arrangement according to the inven-tion of the input shafts results in only a small angle to the universal shaft connecting the said input shafts to the tractor take off shaft.
Since the blower drive is arranged, as seen in the direction of travel, in front of the blowers, while the metering elements drive is arranged behind the blowers, both drives are freely accessible.
A storage tank of optimal width is obtained in that the width thereof, at right angles to the direction of travel, including twice the thickness of the booms with the pipelines, corresponds to the permissible overall width for agricultural vehicles travelling on public streets and highways.
Finally, the invention provides for a blower with a drive shaft and drive elements to be arranged upon a support-ing frame, for the said frame to be secured deta^hably to the 3~
storage tank and to be provided, on its front face, with three point coupling elements.
This makes it a very simple matter to separate the storage tank and the drive elements with the blowers from each other, thus making the said drive elements freely accessible.
The configuration according to the invention also makes it possible, after loosening a few bolts, to pull forward the drive elements and blowers mounted upon the supporting frame fitted with three point couplings, with the tractor, under the storage tank.
Further details of the invention may be gathered from the specification, and the drawings attached hereto, which describe and illustrate by way of example the invention, wherein:
Figure 1 is a rear elevation of the machine according to the invention, with the booms folded in, Figure 2 is a plan view in part section of the same machine:
Figure 3 is a rear elevation of another machine 20 - according to the invention;
Figure 4 is a side elevation of the same machine, Figure 5 shows another machine, also in side eleva-tion' Figure 6 shows a cover over the drive elements on the rear side of the machine;
Figure 7 is a rear elevation of another machine with folded booms, Figure 8 is a front elevation of the machine accord-ing to the invention;
Figure 9 is a side elevation of the machine according to Figure 8, and Figure 10 shows the supporting frame pulled forward -~L21~33~3 under the storage tank.
Referring in detail to the drawings.
The maching is equipped with a central storage tank 1 which is divided, mainly in its lower area, into two parts, by a roof shaped central part 2, Located under the said storage tank, on both sides, are twelve pipelines 3 which, for reasons of stability are arranged in booms ~. The said pipelines are connected to an air duct 5 into which pressure pipes 6 of blowers 7 open. ~ach ten pipelines 3 project be-yond the storage tank at right angles to direction of travel 8, the outer rearwardly pointing ends of the said pipelines, arranged at right angles to the direction of travel and spaced at intervals of 75 cm from each other, being equipped with an outflow aperture. Located in front of the outflow apertures are deflector plates 9 which slope obliquely downwards and deflect the particles of material blown out of the outflow apertures to the ground. In this connection, the width of the lower end of the roof shaped central part is about half the width B of the storage tank.
The material in storage tank 1 passes through out-let apertures 10 to metering device 11, metering element 10 thereof, in the form of cam wheels, passing the said material, through inlet hopper 13, to pipelines 3, the inlets to which are fitted with injectors in a manner known per se and there-fore not shown. Metering elements 12 extend, as seen in the direction of travel 8, over the entire lower length L of the storage tank~ Thus the whole of the available length L of the storage tank, less the width of the drive wheels 14 arranged at metering elements 12, and of the metering elements drive, is utilized.
Under roof shaped central part 2, blowers 7 are arranged in such a manner that they project as little as pos-3`5~3 sible into the storage tank, in order not to reduce the capacity thereof unnecessarily. Front blower 7 is located, as seen approximately in the direction of travel 8, centrally under roof shaped central part 2, while the rear blower is arranged in the rear third of the machine. Drive shafts 15 of blowers 7 are located on the side of blower 7 facing the direction of travel 8, and are mounted upon a common drive shaft 15. ~rranged in front of front blower 7 is a counter-shaft 16 in the form of a V-belt drive with two input shafts 17,18, so that the said blowers may be driven both at differ-ent r.p.m. and with different r.p.m. of the standard tractor take-off shaft. Suction apertures 19 of the blowers are located on the rear side of the blowers.
Metering elernents 12 are driven, from the tractor take-off shaft, through countershaft 16, chain drive 20 (which drives steplessly adjustable eccentric 22 of the vari-able speed drive through shaft 21 arranged laterally below at the side of blower 7), through gear shaft 23 and chain drive 24 located in a cavity 25 in the form of a downwardly open U-shaped rail. The latter extends transversely through the parts of the tank separated by roof shaped central part 2 and is secured to the said tank by welding.
In the examples of embodiment illustrated in Figures 1 to 4, U-shaped rail 25 is arranged behind the second group of metering elements 12 and between the two blowers 7. In the vicinity of suction inlet 19 to front blower 7, rail 25 has an opening, to allow air to reach front blower 7 uninter-ruptedly.
Metering elements 2 are divided into three groups on each side, and can thus be switched on and off by groups.
This is achieved by arranging drive wheels 14 at metering elements 12. Gearwheels 27, located on rockers 2~ and ~Z~13~3 brought into engagement with drive wheels 14 by hydraulic cylinders 28, make it possible to connect the drive to meter-ing elements 12. The drive is disconnected when the said gearwheels are moved away from the drive wheels with the aid of rockers 26 and hydraulic cylinders 28.
Width B of storage tank, at right angles to the direction of travel 8, including twice the thickness D of booms 4 with pipelines 3, corresponds to the permissible over-all width for agricultural vehicles travelling on public streets and highways. Booms 4 are arranged to pivot about axes 29 running in the direction of travel 8 and are divided into a plurality of folding sections 4' and 4". When outer sections 4" are folded for transportation, they are located above storage tank 1.
The example of embodiments illustrated in Figure 3 differs from that in Figure 4 merely in that lower halves 30 of the tank are farther apart, thus allowing more room for blowers 31 which are thus entirely under roof shaped central part 2 and do not project into storage tank 1. Furthermore, input shafts 17 and 18 of countershaft 16 are arranged vertic-ally one above the other. The advantage of this is that lower input shaft 18 can also be used as the drive shaft for eccentric 22 since it runs under blower 31, through to the rear part of the machine.
The machine according to Figure 5 differs from the machines previously described in that U-shaped rail 25 is arranged at the rear side of the machine. The advantage of this is that the rear group of metering elements can be shifted forward by an amount equal to the width of the said U-shaped rail, and booms 4 may also be made somewhat narrower. This also improves the location of the centre of gravity of the machine.
~2~83~
Fitted to the front of storage tank 1 is an attach-ment means 32 for coupling the machine to the three point power hoist on the tractor.
Roof shaped central part 2 is covered with the mobile plate 33 shown in Figure 6, This plate comprises apertures 34 through which air, drawn in by blowers 7,31, can flow.
Width B of storage tank 1 of the machine according to Figure 7, including thickness D of boom parts 4' arranged, for transportation, at the side of storage tan~ 1, corresponds to the legally permissible overall width for agricultural machines travelling on public streets and highways. Booms 4 are arranged to pivot about axes 29 running in the direction of travel and divided into a plurality of folding sections 4' and 4". In the transportation configuration, boom parts 4" are located within the width B of, and above, storage tank 1. Furthermore, only inner boom part 4' is located, when the booms are in the transportation configuration, on each side of the storage tank, as seen in the direction of travel.
The machine according to Figure 8 is equipped with a central storage tank 1, the lower part of which is divided into two parts by a roof-shaped central part 2. The material in the storage tank passes, through the metering elements, into pipelines 3 connected to blowers 31 and, from the outlet ends of the said pipelines it is spread widely over the ground~
Arranged under roof shaped central part 2 are the two blowers 31 with their drive shafts 17 upon supporting frame 35.
Arranged in front of blowers 31 is the countershaft 16, in the form of a V-belt drive with input shafts 17,18. Drive elements 37 for the metering elements are also arranged upon the said supporting frame. The metering elements are driven in known fashion, through a chain drive, by a variable speed ~83~3 drive.
Storage tank 1 of the machine comprises a frame 38 to the underside of which are fitted supports 39 which project downwardly from the machine and thus from supporting frame 35.
By means of bolts 40, supporting frame 35 is secured detach-ably to frame 38 of the storage tank. This allows the said supporting frame, with the parts arranged thereon, to be separated from storage tank 1 and frame 38 thereof, leaving countershaft 16, drive elements 37, and blowers 31 easily accessible for repairs.
To this end, the machine is placed upon ground 41, bolts 40 connecting supporting frame 35 and frame 38 of the storage tank are loosened, and the chain is removed from the chain drive for the metering elements. Supporting frame 35, coupled to the power hoist of the tractor by three point coupling elements 36 and carrying blowers 31 and drive elements 37, is now pulled forward, as seen in the direction of travel, under the storage tank.
This leaves countershaft 16, drive elements 37 and blowers 31 freely accessible, as shown in Figure 10.
After the necessary repairs or maintenance have been completely, supporting frame 35, with blowers 31, is pushed back again under the storage tank with the aid of the tractor, an operation which is facilitated by co-operating guide elements 42 arranged upon supporting frame 35 and frame 38 of the storage tank, since any inaccuracies are compensated for. Supporting frame 35 and frame 38 are then connected to-gether again with bolts 40 and the chain for the metering elements is refitted. The machine is now serviceable once more.
Claims (35)
1. A machine for spreading granular material pneumatic-ally, the said machine being in the form of a trailer and being equipped with a central storage tank and with pipelines, arranged in booms, some of which project considerably beyond the said storage tank at right angles to the direction of travel, the said pipelines being connected by at least one air duct to at least one blower located on the machine and driven from the take-off shaft of the engine driving the tractor, material from the storage tank being fed to the pipelines through outlet aper-tures and by variable speed drive metering devices, the said pipelines comprising outlet apertures at their outer ends which are arranged at right angles to the direction of travel and spaced from each other, the said storage tank being divided into two parts, at least in its lower area, by a roof shaped central part, the said parts of the tank being equipped with outlet apertures and metering devices arranged at least approximately horizontally and in series one behind the other, as seen in the direction of travel, characterized in that the blower, or blowers, are arranged at least mainly below the roof shaped central part and in that the drive shaft of the said blower is located on the side thereof facing the direc-tion of travel; in that the drive elements for the said blow-ers and also for the metering elements, are arranged substan-tially under the roof shaped central part and in an area which is defined as seen in the direction of travel, by the said roof shaped central part; and in that the said metering ele-ments extend at least approximately over the entire lower length of the said roof shaped central part of the tank.
2, A machine according to claim 1, characterized in that several blowers are arranged one behind the other.
3. A machine according to claim 2, characterized in that the drive shafts of the blowers are in alignment with each other.
4. A machine according to claim 3, characterized in that the blowers are arranged upon a common shaft.
5. A machine according to claim 1, characterized in that a countershaft is arranged in front of the blower.
6. A machine according to claim 5, characterized in that the countershaft comprises at least two input shafts.
7. A machine according to claim 6, characterized in that the two input shafts are arranged at least approximately vertically one above the other.
8. A machine according to claims 2 and 5, characterized in that the blowers are adapted to be driven at different r.p.m.
9. A machine according to claim 1, characterized in that the blower drive as seen in the direction of travel, is located in front of the blowers, whereas the metering elements drive is located behind the blowers.
10. A machine according to claim 1, characterized in that an adjusting mechanism for the variable speed drive driving the metering device is located at the rear end of the tank.
11. A machine according to claim 1, characterized in that the metering elements are divided into groups.
12. A machine according to claim 11, characterized in that the metering elements are arranged to be switched on and off in groups.
13. A machine according to claim 1, characterized in that the width of the tank, at right angles to the direction of travel, including twice the thickness of the booms and the pipelines, corresponds to the total permissible width for agricultural vehicles travelling on public streets and highways.
14. A machine according to claim 13, characterized in that the booms are adapted to pivot about axes running in the direction of travel; in that the said booms are divided into a plurality of folding sections; and in that the outer sec-tions are located, when folded, above the tank.
15. A machine according to claim 1, characterized in that the width of the roof shaped central part, at its lower end, corresponds to about half the width of the storage tank.
16. A machine according to claim 15, characterized in that two outlet apertures are arranged in the vicinity of the roof shaped central part.
17. A machine according to claim 1, characterized in that the drive for the metering elements is arranged in a narrow cavity.
18. A machine according to claim 17, characterized in that the narrow cavity extends transversely through the lower part of the tank separated by the roof shaped central part.
19. A machine according to claim 17, characterized in that the cavity is in the form of a U-shaped rail open at the bottom.
20. A machine according to claim 17, characterized in that the cavity is secured to the tank by welding.
21. A machine according to claim 18, characterized in that a chain drive is arranged in the hollow narrow cavity, the metering elements being adapted to be driven by the said chain drive.
22. A machine according to claim 12, characterized in that the chain drive comprises, on each side of the tank, a drive shaft, the metering elements being adapted to be driven in groups from these drive shafts.
23. A machine according to claims 9 and 17, characterized in that, as seen in the direction of travel, the drive is located behind the second group of metering elements.
24. A machine according to claim 17, characterized in that the blower, as seen in the direction of travel, is arranged in front of the cavity.
25. A machine according to claim 24, characterized in that there is provided an additional blower and that the additional blower, as seen in the direction of travel, is arranged behind the U-shaped rail.
26. A machine according to claim 1, characterized in that the rear end of the roof shaped central part is adapted to be covered by a mobile plate comprising apertures.
27. A machine according to claim 13, characterized in that, with the machine in the transportation configuration, at least some of the parts of the booms are located within the width of the storage tank and thereabove.
28. A machine according to claim 27, characterized in that, in the transportation configuration of the booms, only one part of the boom is located on each side of the storage tank, as seen at right angles to the direction of travel.
29. A machine according to claim 28, characterized in that only the inner boom part is located at the side of the storage tank.
30. A machine according to claims 27 and 28, character-ized in that the width of the storage tank, including the thickness of the boom parts located at the side of the storage tank in the transportation configuration, corresponds to the legally permissible overall width for agricultural machines on public streets and highways.
31. A machine according to claim 1, characterized in that the blower, with the drive shaft and drive elements, are arranged upon a supporting frame, in that the said supporting frame is connected detachably to the storage tank, and in that the said supporting frame comprises three point coupling elements on its front side.
32. A machine according to claim 1, characterized in that supports are arranged upon the frame of the storage tank, the said supports projecting downwardly from the supporting frame.
33. A machine according to claim 1 or 2, characterized in that the supporting frame, with the blower, is adapted to be pulled forward under the storage tank.
34. A machine according to claim 1 or 2, characterized in that the supporting frame, with the blower, is adapted to be pushed in under the storage tank.
35. A machine according to claims 3 or 4, characterized in that co-operating guide elements are arranged on the sup-porting frame, and on the frame of the storage tank for the purpose of pushing the said frames together.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3139668.2 | 1981-10-06 | ||
| DE3139668 | 1981-10-06 | ||
| DE3200833 | 1982-01-14 | ||
| DEP3200833.3 | 1982-01-14 | ||
| DE19823228114 DE3228114A1 (en) | 1981-10-06 | 1982-07-28 | Machine for the pneumatic discharge of granular material |
| DEP3228114.5 | 1982-07-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1218393A true CA1218393A (en) | 1987-02-24 |
Family
ID=27189606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000410479A Expired CA1218393A (en) | 1981-10-06 | 1982-08-31 | Machine for spreading granular material pneumatically |
Country Status (3)
| Country | Link |
|---|---|
| CA (1) | CA1218393A (en) |
| FR (1) | FR2513845A1 (en) |
| GB (1) | GB2106763B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2775555B1 (en) * | 1998-03-03 | 2000-05-26 | Kuhn Nodet Sa | BLOWER OF A SEEDER |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2609686C3 (en) * | 1976-03-09 | 1979-01-25 | Amazonen-Werke H. Dreyer Gmbh & Co Kg, 4507 Hasbergen | Machine for the pneumatic discharge of granular material |
-
1982
- 1982-08-31 CA CA000410479A patent/CA1218393A/en not_active Expired
- 1982-09-07 GB GB08225500A patent/GB2106763B/en not_active Expired
- 1982-10-06 FR FR8216766A patent/FR2513845A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2513845B1 (en) | 1985-02-01 |
| GB2106763A (en) | 1983-04-20 |
| FR2513845A1 (en) | 1983-04-08 |
| GB2106763B (en) | 1985-07-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |