DE8706974U1 - Single-seed seeder - Google Patents

Description

Single grain sowing machine

The invention relates to a single-seed sowing machine according to the preamble of claim 1.

Such a seed drill is known as a four-, six- or eight-row seed drill, with four, six or eight seed depositing devices arranged next to each other transversely to the vehicle's longitudinal axis. The six- and eight-row seed drill is too wide for transport on public roads, so the seed drill comprises a four-row base element and has a folding mechanism with which the outer part of the six-row seed drill and the inner part of the eight-row seed drill can be folded.

Ii/15

Telephone: 0 89-53 96 53 Telex: 5-24 845 lipal

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cable: Germaniapatent Munich

DJOS(JrM)I Dank (Munich) K(O 3939 644 (bank code 709 600 00) Deutsche Bunk (Munich) KIo 298 1060 (BIi! 700 700 10) PMlJchMksml (Monchon) KtO 070 ■ 43 ■ 004 (bank code ?00 100 80}

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- 8 - EN 6760

both outer depositing devices can be folded up vertically above ground level. When folded up in this way, the seed drill meets the requirements for dimensions in accordance with the road traffic regulations, but it has an unfavorable mass distribution and an unfavorable center of gravity, which can lead to large vibrations and thus to high vibration loads when driving or transporting the seed drill. Furthermore, since each depositing device has a separate fertilizer container, the mass to be moved when folding up is large, so that the mass distribution in the folded up state is unfavorable and a relatively complex swivel drive must be provided.

The invention is based on the object of creating a multi-row sowing machine in which the outer depositing devices can be easily folded up above ground level in order to achieve the required dimensions and which, when folded up, offers a favorable mass.

2Q distribution and center of gravity.

This task is achieved according to the invention by the sowing machine

according to claim 1. I

2g By arranging the fertilizer storage container away from the external storage devices, it is possible to swing the external storage devices into a folded-up tension band, ie a rest position, in which they are arranged above the fertilizer storage container. This reduces the mass of the storage devices to be moved and also achieves a rest position in which the storage devices are arranged close to the vehicle's longitudinal axis. The mass distribution and the center of gravity are therefore very favorable.

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- 9 - EN 6760

-^ The fertilizer can be fed to the external depositing devices without special connections or hose connections if the external depositing devices automatically engage with a fertilizer feed device when they are swiveled into their operating position. The fertilizer feed device advantageously comprises a filling hopper which can be fed by means of a screw conveyor, compressed air or a conveyor belt.

₁ q A further improvement in the mass distribution and the position of the centre of gravity is achieved if the swivel drive for the outer depositing devices according to claim 8 is arranged in the longitudinal direction of the vehicle in front of the fertilizer storage container.

A locking device according to claim 11 prevents the folded-up outer storage devices from swinging in their rest position during a driving condition relative to each other and relative to the supporting structure of the

Seed drill. It is advantageous if the locking 2U

device is an automatically engaging or locking device according to claim 12.

It is also beneficial for the operating position if the

external storage devices according to claim 15 with the 25

are engaged with the stationary storage devices of the base unit or are held in relation to them, as this excludes a relative movement between the outer and inner storage devices and thus a

excessive vibration stress on the outer shelf-30

directions can be avoided during operation.

This can be achieved without additional components if the inner and outer storage devices according to claim 17 are connected by means of the hydraulic cylinder for the

Swivel drive are clamped against each other.
35

- 10 - EN 6760

A central container as a fertilizer storage container according to claim 18 provides protection for the driver of the tractor against the annoyance caused by the noise of the seed drill. Furthermore, filling the fertilizer is simplified because only a single container needs to be filled. By special design of the shape of the central container, for example according to claim 18, its volume can be maximized without impairing the pivoting ^movement of the outer depositing devices.

If the outer depositing devices according to claim 19 are detachably attached to the support structure of the seed drill, a so-called modular system is achieved, whereby a user can optionally design the seed drill as a four-, six- or eight-row seed drill.

By arranging the markers on the outer storage devices, the markers can also be swiveled into a position that is favorable in terms of center of gravity when they are swiveled into the rest position.

By arranging a separate hydraulic cylinder for the markers according to claim 22, their pivoting

_,. relative to the outer storage devices possible., so that

the markers can also be folded in when the storage devices are in their operating position.

The arrangement of steps according to claim 24 makes it easier for the user to reach the central container, 30

for example, to fill it. However, this can also be done automatically if a filling device is provided according to claim 26. The filling device preferably consists of a conveyor device, for example a

Snow or a band, as well as from filling funnels* The 35

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- 11 - EN 6760

The filling device can be driven by the hydraulics of a towing vehicle, so that no further drive devices need to be provided. In order to minimize the space required by the filling device and at the same time to ensure that the fertilizer storage container is adequately filled, it is advantageous to select an angle of approximately 48° for the conveyor device in relation to the ground surface.

Further objects, applications and advantages of the invention will become fully apparent from the following detailed description of a preferred embodiment with reference to the accompanying drawings.

Figure 1 shows a seed drill in side view,

Figure 2 shows the seed drill iii front view in the direction of arrow A in Figure 1,

Figure 3 shows the seed drill in top view and

Figure 4 shows the seed drill in side view with a filling device attached.

_p. A pneumatic single-seed sowing machine 1, as shown in a six-row version in Figures 1, 2 and 3, has a supporting structure 2 and can be connected by means of a connecting device 3 to a tractor (not shown) via a so-called three-

Point-frame connected or hung on it. The 30

Seed drill 1 is pulled by the towing vehicle in the direction of travel F, as shown in Figure 3, and is supported on the ground by running wheels 4. A fertilizer storage container 9 is attached to the support structure 2 of seed drill 1.

which is transverse to the direction of travel F or a driving 35

- 12 - DB6760

&Igr; zeUglängsachse &khgr;-&khgr; runs. The fertilizer storage container 9 is advantageously designed as a central container, which extends over a width that corresponds to the width of the towing vehicle (not shown), but max. 3 m, i.e. the maximum permissible transport width. A blower 11 is arranged behind the fertilizer storage container 9, which is used to generate compressed air and is usually relatively loud. By arranging the fertilizer storage container 9 between the driver of the towing vehicle (not shown) and the blower 11, the fertilizer storage container 9 forms an effective protective wall for the driver, so that he is not unduly disturbed by the noise of the blower 11.

jg At the rear end of the seed drill, as seen in the direction of travel, a plurality of depositing devices 5 for seed are arranged. The depositing devices 5 run in a line next to one another transversely to the vehicle's longitudinal axis x-x, with one depositing device 5 being provided for each row.

"&lgr; ^In the illustrated six-row version of the seed drill, six depositing devices 5 are arranged next to each other. Each depositing device 5 has a seed container 6, a seed dispenser 8, through which the seed is placed in a soil furrow, and a

2g pressure roller 7. The fertilizer is fed to the individual depositing devices 5 from the fertilizer storage containers in the manner described later.

Of the six depositing devices 5, the four inner " ₀ " depositing devices 5b are fixedly attached to the support structure 2 of the seed drill 1, while the two outer depositing devices 5a are connected to the support structure 2 via a pivoting boom 12. The boom 12 is constructed as a four-bar linkage and has a support element _QK 13 and a substantially parallel to the support element 13

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- 13 - EN 6760

&Idigr; extending drawbar 14 on* The support element 13 and the drawbar 14 are connected at one end to the support structure 2 and at the other end to an outer depositing device 5ä. The boom 12 can thus carry out a circular pivoting movement around its fastening points on the support structure 2 of the sowing machine 1, whereby the outer depositing devices 5a can be brought into an operating position in which they are essentially on the level next to the stationary depositing devices 5b.

.Q and can be swiveled into a rest position in which they are arranged above ground level. Due to the design of the boom 12 as a four-bar linkage, the outer storage device 5a experiences when swiveling relative to the inner stationary storage devices 5b

- ₅ a pure translational movement, ie it is pivoted in a parallelogram, and is accommodated in the rest position above the fertilizer storage container 9 close to the vehicle's longitudinal axis, as shown in dashed lines in Figure 2.

In order to optimize the volume of the fertilizer storage container 9 without affecting the pivoting movement of the outer storage device 5a, its outer sections, viewed in the transverse direction to the vehicle's longitudinal axis, are flared.

__ i.e. the parallel to the vehicle's longitudinal axis

The side walls of the fertilizer storage container 9 are inclined in their upper section 9a towards the vehicle's longitudinal axis x-x.

The boom 12 has a swivel drive in the form of ^a

hydraulic cylinder 10 and is arranged together with it in front of the fertilizer reservoir 9, preferably in the upper area of the three-point hitch, as seen in the direction of the vehicle's longitudinal axis x-x. This enables a favorable

^ symmetric mass distribution in the resting position. The Hy-

- 14 - EN 6760

The diaulic cylinder 10 is attached at its end to the supporting structure 2 of the seed drill 1 and at its other end to the support element 13 of the boom 12. It is operated by means of a conventional device, not shown.

When the two arms 12 reach their rest position at the end of the swivel movement (shown in dashed lines in Figure 2), they are automatically

The locking device comprises a spring-loaded swivel latch which is attached to one of the two arms 12 and has a recess. The recess comprises a pin which is attached to the other arm 12 for locking the two arms 12. The locking mechanism ensures that the two arms 12 and the external storage devices 5a attached to them are held immovably relative to one another.

The swivel bolt of the locking device is arranged in its locked state directly below the connection of the hydraulic cylinder 10 on the support element 13 in such a way that a retraction of the hydraulic cylinder ¹ ^ ^{by a small} amount swivels the swivel bolt against the spring preload and disengages it from the pin, so that the locking is released. The

§ Locking device therefore requires no additional

chen components for releasing the lock.

Even in their operating position, the outer storage

devices 5a relative to the inner stationary storage devices 5b. For this purpose, an engagement device (not shown) is arranged, which

" qp pin running transversely to the vehicle's longitudinal axis x-x, the

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- 15 - EN 6760

is arranged on the support structure 2 of the sowing machine 1, and a tab arranged on the outer storage device 5a. The tab has a recess which lies over the pin when the outer storage device 5a is pivoted into its operating position. In this way, the outer storage devices 5a are prevented from moving in the direction of the vehicle's longitudinal axis x-x relative to the inner stationary storage devices 5b. The possibility of movement of the outer storage devices

jQ 5a relative to the inner storage devices 5b in the direction transverse to the vehicle's longitudinal axis x-x, this prevents the hydraulic cylinders 10 from being retracted when the outer storage devices have reached their operating position. This means that the outer storage devices

j^ devices 5a with the inner stationary storage devices 5b and thus with the supporting structure 2 of the seed drill 1 and held securely in position.

During operation of the seed drill 1, fertilizer must be continuously conveyed from the fertilizer storage container 9 to the individual depositing devices 5. For this purpose, the internal stationary depositing devices 5b are connected to the fertilizer storage container 9 via permanently installed hose lines and the fertilizer is fed to the individual internal depositing devices 5b due to its own weight.

In order to avoid the constant assembly and disassembly of hose lines for the external storage devices 5a when

- ₀ these are to be swivelled into their rest or operating position, a fertilizer feed device is arranged, with which the outer depositing devices 5a automatically come into coupling when swivelling into their operating position. For this purpose, on the booms 12 or on the outer

_3S storage facilities Sa each have a fertilizer-feed

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- 16 - EN 6760

ter is arranged, which is moved under a fertilizer opening formed on the support structure 2 of the seed drill 1 when the boom 12 is swiveled into the operating position. The fertilizer opening is fed from the fertilizer storage container 9. This feeding can take place in different ways, for example by means of a conveyor screw, a conveyor belt or by means of compressed air. The fertilizer emerging from the fertilizer opening falls into the fertilizer container due to its own weight.

IQ filling funnel and is then fed to the individual external depositing devices 5a via hose lines. In this way, no installation of lines or similar is necessary after the boom 12 has been swiveled away. Furthermore, a separate drive device for the conveyor screw or the conveyor belt can be dispensed with if these are coupled to and driven by the necessarily present ground drive of the seed drill 1.

2Q At the outer ends of the outer storage devices 5b, markers 15 are pivotably mounted transversely to the vehicle's longitudinal axis x-x in such a way that they can be pivoted relative to the outer storage devices 5b via a hydraulic cylinder 16 or are held immovably relative to them by means of the hydraulic cylinder 16. By means of a rod coupling, the markers 15 are automatically pivoted out into their operating position when the booms 12 are pivoted. However, it is possible to pivot the markers 15 relative to the

&ogr;« outer storage devices 5a so that the markers 15 can be retracted even when the outer storage devices 5a are in their operating position.

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- 17 - EN 6760

To manually fill the fertilizer storage container 9, the user must climb onto the seed drill 1 and pour the fertilizer into the fertilizer storage container 9 from above. To make this process easier, it is advantageous to provide steps on the back of the seed drill 1 between individual storage devices 5, via which the user can easily reach the fertilizer storage container 9. The steps are advantageously above the wheels of the seed drill.

^q machine so that they simultaneously take on a protective and shielding function. By arranging a filling device, filling the fertilizer storage container 9 can be made considerably easier. The filling device is located in the middle area on the back of the

^g sowing machine 1 and has, according to Figure 4, a conveyor device 20, preferably a conveyor screw or vjin conveyor belt, which is held at its lower and upper end on the supporting structure of the sowing machine 1. In order to achieve the smallest possible space requirement while at the same time achieving sufficient conveying capacity of the conveyor device, it has proven to be advantageous if the conveyor device 20 runs at an angle of inclination of 45° with respect to the ground. A filling funnel 21 is arranged at the lower end of the conveyor device 20.

_rtC net, in which the user can insert the fertilizer into the hopper

9. The fertilizer is brought to a level above the fertilizer storage container 9 via the conveyor device 20, from where it falls into the fertilizer storage container 9 under its own weight. In order to achieve a uniform filling of the fertilizer storage container 9, it may be advantageous to arrange distribution chutes 22 at the upper end of the conveyor device 20, via which the fertilizer is fed into the desired areas of the fertilizer storage container 9. In order to provide an additional drive device for the conveyor device 20 36

- 18 -

EN 6760

^v 1, it is desirable that these are

Hydraulics of the towing vehicle.

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Claims (25)

P rotective claims 1. Multi-row pneumatic single-seed sowing machine, with several depositing devices for seed, which are arranged next to one another transversely to the vehicle's longitudinal axis and each have a seed container, and at least one fertilizer storage container from which fertilizer is supplied to each depositing device, with at least the outer depositing devices hanging on a pivotable boom with which they can be pivoted into an operating position in which they are arranged next to the stationary depositing devices essentially at ground level, and into a rest position in which they are arranged above ground level, characterized in that the outer depositing devices (5a) are arranged without fertilizer storage containers and in their rest position above the fertilizer storage container (9). 2. Seed drill according to claim 1, characterized in that the outer storage devices (5a) during Ii/15 Telephone: 0 89-53 96 53 Telex: 5<24 845 tipat cabla Diesdnor Bank (Munich) KIo. 3939 844 (bank code 700 800 00) beulscho Bank (Munich) KIo. 286 1060 (DL2 700 700 10) Postscheckamt (Munich) KIo. 670.43.804 (BU 700 100 BO) ■ ■ · ■ ·< ··· &igr; - 2 - EN 6750 "L swivel into their operating position and can be automatically coupled to a fertilizer feed device. 3. Seed drill according to claim 2, characterized in that the fertilizer supply device comprises a fertilizer filling funnel arranged on the boom, which, when pivoted into the operating position, is moved under a loaded fertilizer discharge opening formed on the support structure (2) of the seed drill (1). 4. Seed drill according to claim 3, characterized in that the discharge opening is fed by means of a conveyor screw which can be driven by a ground drive. ,c 5- Sowing machine according to claim 3, characterized in that the discharge opening can be fed by means of a compressed air conveying device. 6. Seed drill according to one of claims 1 to 5, characterized in that the outer depositing devices (5a) can be pivoted essentially purely in a translational manner relative to the stationary depositing devices (5b). 7. Seed drill according to claim 1 or 6, characterized in that the outer depositing devices (5a) can be pivoted on a circular path. 8. Seed drill according to one of claims 1 to 7, characterized in that each boom (12) has a swivel drive (10) and with it in the direction 30 is arranged in front of the fertilizer storage container (9) as seen along the vehicle’s longitudinal axis (x-x). 9. Seed drill according to claim 8, characterized in that the boom (12) is a four-bar linkage with ·« I · Il '· «till 441* Il Il - 3 - EN 6760 Support element (13) and a pull rod (14) arranged essentially parallel to the support element (13), which each is hinged to a support structure (2) of the Särna-^ BGhine (1) and to the outer storage device (5a) arig-^ F, are closed, and that the swivel drive is a hydraulic cylinder (10). 10. Seed drill according to claim 9, characterized in that the boom (12) is attached to a connecting device j&mdash; 'uufli/ (3/ uienöfiuön DlTö-L &mdash;&Rgr;&iacgr;&iacgr;&Pgr;&igr;&iacgr;u&mdash;SCCn SriySSOiixOBSSn j.5n 11. Seed drill according to one of claims 1 to 10, characterized in that the outer depositing devices (5a) are locked in their rest position by means of a locking _fi gaging device are secured. 12. Seed drill according to claim 11, characterized in Ii advised that the locking device should have a spring loaded | pre-tensioned swivel bolt with a recess | s for a tenon. | 13. Seed drill according to claim 12, characterized in that | S net that the swivel bolt and the pin each at a f &iacgr; of the two arms (12) are attached - &idiagr; I 14. Seed drill according to one of claims 11 to 13, | characterized in that the locking device ^ by means of one of the hydraulic cylinders (10) of the swivel | drive can be released by removing the hydraulic cylinder (10) | acts against the spring preload on the swivel bolt. *< 15. Seed drill according to one of claims 1 to 14, characterized in that each outer depositing device (5a) is held in its operating position on the stationary depositing devices (5b) by means of an engagement device. - 4 - EN 6760 ten is. 16* Seed drill according to claim 15, characterized in that the engagement device comprises a grooved tab provided with a recess and a pin which engages in the recess* 17. Seed drill according to one of claims 1 to 16, characterized in that the outer depositing devices ■Ultn/VAn / Ci-fc V 4 ·"*. -I Vk->»A·*" OA 4--*-»-! &agr;1&ggr;»&Ogr;&Igr;&Pgr;&Lgr;&Ogr;·( "H &Lgr;&Lgr; IT» 4 *4*-4&aacgr;&Iacgr; Cl /^CkCI I4"t»/*l T*Q 11 _ lik cylinder (10) are clamped to the supporting structure (2) of the seed drill (1). 18. Seed drill according to one of claims 1 to 17, characterized in that the fertilizer storage container (9) 15 a central container 1st arranged transversely to the direction of travel, the side walls of which run parallel to the vehicle's longitudinal axis (x-x) and are inclined towards the vehicle's longitudinal axis in their upper section (9a). 19. Seed drill according to one of claims 1 to 18, characterized in that the outer storage devices (5a) are detachably attached to the supporting structure (2) of the sowing machine (1). 20. Seed drill according to one of claims 1 to 19, characterized in that the sowing machine is provided with a marker (15) on each side, viewed in the direction of the vehicle's longitudinal axis (x-x), which can be pivoted out transversely to the vehicle's longitudinal axis. 21. Seed drill according to claim 20, characterized in that the marker (15) is pivotally mounted on the outer depositing device (5a). IKI «· <<«· a · a a a · · * a a a · · · &iacgr;&iacgr; S *e t - 5 - EN 6760 ^ 22. Seed drill according to claim 20 or 21, characterized in that the marker (15) can be pivoted relative to the outer depositing device (5a) by means of a hydraulic cylinder (16). 23. Seed drill according to one of claims 2Ö to 22, characterized in that the marker (15) is automatically swung out via a rod coupling when the outer storage device (Sä) is swung out. 24. Seed drill according to one of claims 1 to 23, characterized in that steps are provided on the rear of the seed drill between individual depositing devices (5). 25a Seed drill according to claim 24, characterized in that the steps are arranged above running wheels (4) of the seed drill. 26. Seed drill according to one of claims 1 to 25, characterized in that a filling device for the fertilizer storage container (9) is arranged on the rear of the seed drill. 27. Seed drill according to claim 26, characterized in that-25 net that the filling device is fed by a screw conveyor (20) and filling funnels (21). 28. Seed drill according to claim 26, characterized in that the filling device is driven by a conveyor belt (10) and filling funnels (21). 29. Seed drill according to one of claims 26 to 28, characterized in that the filling device is hydraulically driven. II 4 t «I · EN 6760 30. Seed drill according to one of claims 27 to 29, characterized in that the angle of inclination of the conveyor belt or the conveyor screw is approximately 45°* 25 30 35