LT3895B - Machine for harvesting of potatoes - Google Patents

Abstract

In a multi-row potato harvester having a digging device and leaf chains (16) arranged next to one another, rotating endlessly in triangular form (upper strand, lower strand) and with an inclined potato conveyor band (24) rotating endlessly therein, and having two transverse transport devices (25) which are located at the end and which rotate above the lower strand (26) of the leaf chains (16) and which have between them a middle interspace (29) letting through thrown-off potatoes, there is arranged a further leaf chain (16) which rotates in triangular form in the middle region between outer leaf chains (16) and the lower strand of which rotates underneath the interspace (29). <IMAGE>

Description

The invention relates to a multi-row potato digger having a sliding or pulling digger, a chain conveyor and a bulb separator with a rotating closed triangular trajectory, a band and a cross conveyor.

From the VFR application, OS 3700095 is a known potato digger consisting of a tractor and a forwarder with a front digger. The separation conveyor is mounted on the tractor's side and is oriented in the direction of movement and can be moved across the direction of movement. In addition, the potato digger has loading facilities.

From the VFR application OS 3726559 is known a large potato digger which has a frame, front guides and support wheels and a digger behind them. Behind the excavator are transport and dispensing facilities. The rod conveyor is located at the rear and surrounds the upper shaft and the two guide shafts to form a loop. The conveyor transports potatoes and potatoes that fall through the crevices between the conveyor bars.

Known multi-row potato diggers have the disadvantage that special and special measures are needed to improve the distinction between moving potato tubers and potatoes, which greatly increases the machine costs.

In the case of chain-elevator potato separators mounted as V-shaped chain paths, the potato tuber falls through the increasing gap between those chain paths on the uninterrupted rotating potato conveyor underneath which it falls on the transverse conveyors. However, ne2 inevitably drops the tuber along with the tuber through the V-gap.

It is also known that under the upper branch of some parallel conveyors transverse conveyors may be provided, including a gap through which the potato tuber falls.

VFR Patent Application OS 363169 describes a four-row potato digger equipped with chain-rod potato and potato conveyors. Potatoes and potatoes fall on the first pair of chain-rod conveyors with small cracks between the conveyor rods. One chain-rod conveyor has widely spaced rods and is designed to separate and remove potatoes. Another chain-rod conveyor continues to transport potatoes toward the transverse conveyors.

Dropping potatoes from similar diggers causes some difficulty, since the conveyors have different lengths and the delivery conveyors rotate between the side conveyors.

SUMMARY OF THE INVENTION The object of the present invention is to provide a potato digger that is not conventional and has the inherent disadvantages of known potato machines and which, by simple technical means, distinguishes tubers well from potatoes.

This principle of the invention is realized by installing an additional conveyor separator with a triangular trajectory belt between the outer conveyor dividers, the lower part of which moves beneath the transverse conveyor spacers, in a potato digger.

A preferred modification of the invention is that all parallel-rotating conveyor-separators surround the respective guide coaxial shafts.

It is also recommended that the mid-span conveyor-spacer bar be made of chains and rods with wider slits than adjacent conveyor-spacers.

In the case where the divider conveyors are arranged side by side, the aforementioned span of transverse conveyors must be in the middle of these conveyors.

Finally, only one wide conveyor separator can be provided, which has one transverse conveyor belt for transporting the tubers, and which, together with the aforementioned gap length, has the same width as the conveyor-separator belt.

Belts may be used instead of some conveyor chains.

This modification and the proper arrangement of the cretley slits allow the tubers to fall on the transverse conveyors above the lower transport-separator axis. Because of the space between the two transverse conveyors, only the tubers separated from the potatoes fall into the reservoir or on the ground through the lower part of the central conveyor separators, which have widened crevices. In this way, the tubers and potatoes can be well separated and harvested.

The distances between the rods of this part of the conveyor-divider are made as large as possible to prevent the tubers from moving in the direction of the ground or the reservoir.

In order to prevent the potatoes from falling into the cretaceous cracks area, it is possible to use a guide bar which can be slid so that the wider cracks under the crown can be reduced so that the crowns extend from the top to the chains. potato tubers would be very well distinguished. However, on the other hand, when the crevice cracks are in the lower part, they must be large enough to allow the tubers falling from the transverse conveyors to fall through them.

Another modification of the invention proposes to form under the transverse conveyor a corresponding loop of the lower portion of the conveyor separator bar, through which the remaining potato tubers fall.

The invention is explained in the drawings, in which:

FIG. 1 is a schematic side view of a potato digger,

FIG. 2 - top view of the same potato digger,

FIG. 3 is a rear arrow view of a conveyor-separator separating potatoes and potatoes,

FIG. 4 - top view of conveyor-separator bar,

FIG. 5 - rear view of distributed conveyor-separators,

FIG. 6 is a side elevational view of a modified conveyor-spacer having a loop loop at the bottom.

The multiple potato digger 1 has a push type digger 2 disposed between two frames 3 spaced apart, which digs the potato tubers from the ground and at the same time separates them from the potatoes. Attached thereto is a sloping lifting device, which causes the tuber tubers and potatoes to move slightly apart (not shown) due to the movement of the potato digger 1 and to slide on the first conveyor 4, whose belt moves in the direction opposite to the direction of movement of the digger 2. The conveyor 4 consists of a chain belt 5 rotating about the drive shaft 6 and the guide shaft 7. On the chain belt 5, parallel circular bars 8 or the like are arranged at a certain distance across the direction of movement. The conveyors 4 are arranged at a certain angle to the ground and their total working width corresponds to the area of the excavator 2.

The movement of the potato tubers and the potatoes from the conveyor 4 causes the ground to fall off due to their movement, which, due to the grid structure of the transporter 4, falls on the soil.

Behind the first conveyor 4 is a conveyor-separator 9 having a top surface 10 approximately parallel to the upper surface of the first conveyor 4 and having a transverse section in the form of a rectangular triangle. On the upper surface 10 of the conveyor-separator bar 9, potato tubers and potatoes fall from the first conveyor 4.

The conveyor-separator strip 9 is made up of a plurality of parallel circuits 23 spaced apart, on which circular rods 11 parallel to one another are spaced apart at a certain distance so as to form a screen 12 having slits large enough for the potato tubers on the one hand could pass through them and on the other hand allow the potatoes to remain on the screen 12.

The slots 13 of the screen 12, which are closer to the edges of the conveyor separator strips 9, which are closer to the imaginary axial line of the potato digger in the direction of movement, are larger, e.g., wider than the slots 14 of the side sections 14 of the strips.

Beneath the upper surface 10 of the conveyor-separator bar 9 is a so-called guide bar 15, which is mounted rigidly but is capable of being moved (not shown). The belt of the conveyor-divider 9 moves in a closed triangular trajectory, furthermore, its upper shaft 16 is driving and the other two shafts 17 are guides.

Another, second, conveyor 18 is mounted inside the conveyor-divider 9. Also, at a certain distance from each other in a transverse direction of travel and parallel to the ground, there are provided potato tuber transverse transporter 19. These two tubular transverse transporter 19 do not overlap the entire transporter-spacer 9. the potato tubers may fall through the larger crevices 13 in the lower part 20 of the conveyor-divider 9 to the ground or to the bottom of the collecting tank 21.

As soon as the potato tubers and potatoes fall on the conveyor-separator belt 9, the potato tuber falls through the slots 14 of the conveyor-separator 9 belt onto a second conveyor 18 mounted at a certain distance from the upper surface 10 of the conveyor-separator 9. the fallen potato tubers are transported on both of the upright transverse conveyors 19 of the miLT 3895 B, from which the potato tubers fall through the larger crevices 13 in the lower portion 20 into a collecting container 21 or the like.

The potatoes on the conveyor-separator 9 are transported to the point where they finally fall down on the potato transporter 22 mounted in the transverse direction of movement, from where they fall to another separate collection tank or the like. (not shown).

The guide bar 15 may divide, closer to the middle, the larger slots 13 of the upper surface 10 of the bar so that the potatoes cannot fall through them and are thus directed to the potato conveyor 22. Larger slots 13 are only relevant to the undersurface of the , and must have dimensions that guarantee a good fall of the potato tuber into the collecting tank 21 or so beneath it.

FIG. In another embodiment of the invention shown in Figure 5, two side conveyor spacers are provided, the webs having a closed triangular trajectory and having smaller dimension slots 14 formed by chains 23 and round rods 11. Between the conveyor spacers are two central conveyor separators 24 with larger dimension slots 13. , through which the potato tuber falls down through a gap 25 between the transverse conveyors 19. About this space 25, a closed triangular trajectory moves the central conveyor-spacer bar with larger dimensions so that its lower portion is spaced between the transverse conveyors 19 for this purpose. , that the potato tubers are separated from the potatoes by the lower part.

FIG. 6 shows a modified view of a conveyor-separator bar 9 moving along a triangular trajectory. In this embodiment, at the transverse conveyors 19, the lower portion 26 of the conveyor-separator bar 9 moves in a loop-shaped trajectory, such as a Z-shaped trajectory. This also makes it possible to remove the remaining potato tubers from the underside 20 of the conveyor-separator bar 9.

Thus, in accordance with the invention, the middle portion of the conveyor-separator strip 9 is made with slits of larger dimensions.

Claims (9)

DEFINITION OF INVENTION 1. Multi-row potato digger with excavator, side-by-side belt conveyor belt, slanting conveyor for potato tubing and transverse tuber transfer conveyors above the lower portion of the conveyor-separator belt and forming a spacing between the tubers, characterized in that there is another conveyor separator between the conveyor-dividers (9), which has a band moving in a closed triangular trajectory and whose lower part moves after transverse, tubular displacement, between the conveyors. 2. Potato digger according to claim 1, characterized in that each of the strips of conveyor-separator (9) moving in parallel is driven by a drive shaft (16), furthermore, the conveyor-separator belt moving about the middle gap has larger slits (13). than adjacent conveyor-separator bands. Potato digger according to claim 1 or 2, characterized in that there are two conveyor separators (24), the parts of which have a wider gap in the middle region of the strips. Potato digger according to one of Claims 1 to 3, characterized in that the conveyor-separator (9) is a chain-bar having slots which are wider in the portion of the belt moving above the collection tank (21). Potato digger according to one of Claims 1 to 4, characterized in that one or more guide rods (15) parallel to the conveyor separator (9) are provided at the upper strip surface (10) of the conveyor separator (9) at the area of the wider cracks. to the direction of movement which changes the dimensions of the larger slits (13) of the upper bar. Potato digger according to one of Claims 1 to 5, characterized in that the guide rods (15) are arranged so that their position can be changed. Potato digger according to one of Claims 1 to 6, characterized in that the lower part (26) of the conveyor-divider (9) moving beneath the transverse conveyors is arranged to move in a loop-shaped trajectory. Potato digger according to one of Claims 1 to 6, characterized in that the lower part (26) of the conveyor separator (9) moving beneath the transverse conveyors is arranged to move in a Z-shaped trajectory. A multi-row potato digger having a digger, a conveyor-separator belt having a closed triangular trajectory, a conveyor with a sloping endless belt for moving potato tubers, characterized in that under the wide surface (10) of the conveyor separator (9) the transverse transporter (19) and the space for the potato tuber to fall are within the width of the transporter-spacer (9).