JPH0454747Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a device for separating harvested products from stones, gravel, soil clods, and other foreign substances in a harvester for underground rhizome agricultural products such as potatoes.

(Prior art and its problems) Conventionally, this type of separation device has a conveyor on which a flexible protrusion is formed in front of the outlet of a rotary bucket conveyor, and a conveyor with a flexible projecting piece formed above the conveyor. This is made up of a plurality of separation brush rods that are arranged in parallel and are rotatable in diagonal directions, and the harvested material placed on the flexible protrusion of the conveyor is transferred to the plurality of rotating separation brush rods. Therefore, the separation brush rod is sent out in the rotating direction, and foreign objects such as stones and gravel are caught by the flexible protrusions or sink between the flexible protrusions and are transported to the end of the delivery side and fall, where they are harvested. It was separated from things.

However, in the above-mentioned conventional separating device, the separating brush rod that separates the harvest rotates on the flexible protrusion of the conveyor in a direction obliquely intersecting the conveyor. This has the disadvantage that the separation efficiency decreases due to rubbing against the brush pieces, and in order to solve this problem, it is necessary to replace the separating brush rod at an early stage.

(Problem to be solved by the invention) The present invention was devised in view of the above-mentioned problems of the prior art, and its purpose is to provide a separation device that can maintain the separation effect over a long period of time. That's true.

(Means for Solving the Problems) The technical means achieved by the present invention to achieve the above object is to provide an outlet for a rotary bucket conveyor and a conveyor belt provided below the outlet of the rotary bucket conveyor. A separation conveyor having numerous flexible projecting pieces is provided between the separation conveyor and the conveyor, and opposing ends of the separation conveyor and the transport conveyor are arranged on substantially the same vertical line.

(Function) By using the above-mentioned technical means, the harvested products and foreign matter carried out from the outlet of the rotary bucket conveyor are placed between the rotary bucket conveyor and the conveyor before being sent to the conveyor. The harvested products are conveyed on the flexible protrusions of the separating conveyor and transferred onto the lower conveyor, and among the foreign objects, stones and gravel that are heavier than the harvested products are removed. are held between the flexible protrusions deformed by their weight and conveyed to the carry-out end, while stones and sand smaller than the harvested material sink between the flexible protrusions and transported to the carry-out end. As the separation conveyor rotates, the foreign objects, etc. are subjected to a downward falling action and fall at a position away from the input side end of the lower conveyor and are separated from the harvest.

(Embodiment) An embodiment of the present invention will be described below based on the drawings. In the figure, A is a separation device, and the separation device A is composed of a separation conveyor 1, a transport conveyor 2, and a rotary bucket conveyor 3. .

The separation conveyor 1 consists of a conveying surface 1 of an endless belt 1b suspended between a pair of pulleys 1c.
b' is provided with numerous flexible projecting pieces 1a..., and the carrying-in side end 1'' is arranged close to the carrying-out port 3a of the rotary bucket cart 3, which will be described later, and the opposing carrying-out side end 1' is disposed on substantially the same perpendicular line as the carry-in end 2'' of the conveyor 2.

The belt 1b may be made of the same material as the well-known conveyor or a different material, and the flexible protrusion 1a is preferably made of highly elastic rubber or synthetic resin, so that it does not deform under the weight of the harvested material x and is free from foreign matter. y
, etc., and deforms so as to pinch the foreign object y, etc., and is disposed over the entire conveyance surface 1b' of the belt 1b.

Therefore, if the belt 1b and the flexible protrusions 1a... are made of the same material such as rubber, they are integrally molded, and if they are made of different materials, the flexible protrusions 1a... are implanted into the belt 1b and integrally formed. There are conceivable means of structuring the system.

Further, it may have the same configuration as a known conveyor with flexible protrusions.

According to the illustrated example, the transport conveyor 2 has the same configuration as the separation conveyor 1, and is formed in a longer shape than the separation conveyor 1, and has an inlet side arranged on the separation conveyor 1 side. End 2″
and the discharge side end 1' of the separation conveyor 1 are located on substantially the same vertical line and are located lower than the separation conveyor 1, but a simple flat belt may be used without any restrictions. isn't it. In the illustrated example, the separation conveyor 1 is often installed in an inclined manner as shown in the figure.
This is preferable because when the transported harvest x falls onto the conveyor 2, the flexible protrusions 2a act as cushions to relieve damage to the harvest x.

Also, when positioning it on the second feed belt 5,
By arranging the discharge side end 2' on substantially the same vertical line as the edge 5a of the second feed belt 5, even if a foreign object y or the like falls from the separation conveyor 1 onto the conveyor 2 together with the harvested material x, the The foreign matter y, etc. can be removed again by being sandwiched between the flexible protrusions 2a, and the two-stage structure allows complete separation work.

The rotary bucket conveyor 3 has a well-known configuration, and although a detailed explanation thereof will be omitted, its discharge port 3a is connected to the input side end 1'' of the separation conveyor 1.
It shall be located at the top.

Therefore, the harvest x, foreign objects y, etc. sent to the rotary bucket conveyor 3 by the first feed belt 4 are dropped onto the separation conveyor 1 from the outlet 3a, and the foreign objects y, etc. are separated by the flexible protrusion due to their own weight. Items that are pinched by the deflection of the protrusions 1a or smaller than the gap between the protrusions 1a sink between the protrusions 1a, and only the harvested material x is placed on the protrusions 1a... at the unloading side end 1'.
The foreign objects y, etc. that are conveyed to the lower conveyor 2 and fall onto the lower conveyor 2, and are caught or sunk between the protrusions 1a, are subjected to a downward falling action due to the endless rotation of the separating conveyor 1. When it is worked, it falls (when the projecting piece 1a becomes downward after passing the position where the carrying-out end 1' overlaps with the carrying-in end 2'' of the conveyor 2) and is separated from the harvested product. It will be done.

In this case, it is preferable to provide a separate conveyor or gutter (not shown) at the drop position as a means for discharging the fallen foreign matter y, etc.

And the harvest x that fell onto the conveyor 2
... is conveyed to the discharge side end 2', falls onto the second feed belt 5, is conveyed, and is thrown into the harvesting box 6.

(Effects of the invention) The present invention provides the following advantages: between the outlet of the rotary bucket conveyor and the conveyor provided below the outlet of the rotary bucket conveyor,
A separating conveyor having numerous flexible projecting pieces is provided, and the opposing ends of the separating conveyor and the transport conveyor are arranged on substantially the same vertical line, so that, like a conventional separating device, The problem of reducing separation efficiency due to damage to the brush part of the separating brush rod caused by rotating the separating brush rod, which separates the harvest, on a flexible protrusion of the conveyor, has been resolved, and the separation can be carried out over a long period of time. This is very useful and practical as it allows efficiency to be maintained effectively and also to suppress the rise in costs.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view of the main parts of a harvester in which the separation device of the present invention is installed, Fig. 2 is an enlarged perspective view of the main parts,
FIG. 3 is a longitudinal sectional view of the main part. In the figure, A... Separation device, 1... Separation conveyor, 1a... Flexible protrusion, 2... Conveyance conveyor, 3... Rotary bucket conveyor, 3
a...Export exit.

Claims (1)

[Scope of utility model registration request] A separation conveyor having numerous flexible protrusions projecting thereon is provided between the outlet of the rotary bucket conveyor and a transport conveyor provided below the outlet of the rotary bucket conveyor, and A separating device for a harvester for underground rhizome agricultural products, in which the opposing ends of a conveyor and a transport conveyor are arranged on substantially the same vertical line.