JPH0413958Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a threshing device mounted on a combine harvester, etc., and more specifically, a crimp net is stretched below the handling barrel, and a The present invention relates to a threshing device in which a grain pan is provided in the grain pan, and a wind selection path is formed below the grain pan for guiding the sorting wind from a winnowing machine.

[Conventional technology]

Conventionally, there has been a device in which a crimp net and a grain pan are disposed in this order below the handling barrel, and a wind selection path is formed below the grain pan to guide the sorting air from the winnow. However, in this conventionally known threshing device, there is no wind selection path between the crimp net and the grain pan to guide the sorting air, and the grains and cut straw that have fallen from the crimp net are
The structure was such that it would fall directly onto Glenpan.

[Problem that the invention attempts to solve]

Therefore, in conventional threshing equipment, although grains and cut straw that have fallen from the grain pan are subjected to wind selection processing, there is no wind selection treatment at all between the time they fall from the crimp net and the grain bread. As a result, the wind sorting efficiency as a whole is poor, and since the straw is dropped and fed onto the grain pan in a state containing a large number of cut straws, it has the disadvantage of adversely affecting the oscillating sorting in the grain pan.

In order to eliminate such drawbacks, an auxiliary grain pan should be provided between the grain pan and the crimp net.
It is conceivable to form an auxiliary wind selection path below this auxiliary grain pan. However, simply providing an auxiliary grain pan and an auxiliary wind sorting path results in the inconvenience that effective wind sorting or oscillating sorting cannot be carried out in response to increases or decreases in the amount of threshed material. That is,
If the amount of threshed material is normal and a suitable amount of grains and cut straw falls from the crimp net, there is no problem, but if the amount of threshed material is large,
A large amount of grains and cut straw fall onto the auxiliary grain pan, and are dropped onto the grain pan below without being sufficiently loosened and screened. On the other hand, if the amount is small, not only will the amount of grains and cut straw that fall from the crimp net be small, but also the grains will fall onto the auxiliary grain pan and be sorted by shaking.
On the lower grain pan, the layer of grains and cut straw becomes thinner, so even when the grain pan is shaken, the grains are reliably sorted by shaking so that the heavier grains are at the bottom and the lighter straw is at the top. As a result, there arises the disadvantage that the sorting efficiency is reduced.

The present invention aims to eliminate these inconveniences, and its purpose is to create a threshing system that can always perform efficient wind sorting and rocking sorting, and improve the overall sorting effect, regardless of the increase or decrease in the amount of threshed material. The purpose is to provide equipment.

[Means for solving problems]

In order to achieve this object, the threshing device according to the present invention is provided with an auxiliary grain pan between the grain pan and the crimp net, and an auxiliary wind selection path is formed between the auxiliary grain pan and the crimp net. It is characterized in that the grain pan is provided so as to be rotatable and fixed around its windward side.

[Effect]

In this way, since the auxiliary grain pan is provided between the grain pan and the crimp net, and the auxiliary grain pan is formed below the auxiliary grain pan, some of the grains and cut straw that have fallen from the crimp net are They fall onto the auxiliary grain pan and are sorted by shaking, and as they fall from this auxiliary grain pan, they are pre-selected by the sorting wind flowing through the auxiliary wind selection path, and then fall onto the grain pan below. As before, it undergoes rocking sorting and wind selection. Therefore, overall sorting efficiency is improved.

In addition, the auxiliary grain pan is configured to be able to rotate and fix freely around its windward side, so when the amount of threshing material is large, the auxiliary grain pan can be rotated upward and fixed. This makes it possible to lengthen the time for shaking grains and cut straw on this auxiliary grain pan, and after the grains and cut straw are sufficiently sorted, they can be dropped into the auxiliary wind sorting path below. Wind selection can be performed effectively. On the other hand, if there is little threshing material,
By rotating and fixing the auxiliary grain pan downward, the time required for the auxiliary grain pan to shake and sort is shortened, and grains and cut straws fall onto the lower grain pan in a short period of time. By increasing the layer of grains and cut straw in the filter, it is possible to effectively perform shaking sorting.

[Effect of idea]

As is clear from the above explanation, according to the threshing device of the present invention, by performing auxiliary wind selection, the overall wind selection efficiency can be improved, and moreover, regardless of the amount of threshed material, it is possible to improve the overall wind selection efficiency. Effective selection can be performed.

〔Example〕

An embodiment of the present invention will be described based on the drawings. FIG. 3 shows the entire threshing device, in which a handling cylinder 2 is rotatably mounted on a shaft in a handling chamber 1, and is connected to a feed chain 3 by a feed chain 3. It is configured to thresh grain culms that are conveyed in a pinched manner. A crimp net 4 is installed below the handling barrel 2, and the grains and fine cut straw after threshing are dropped downward through the crimp net 4, and the remaining processed materials are passed through the crimp net 4.
It is configured to fall downward from the dust exhaust port 5 at the terminal end.

Below the crimp net 4 is a grain pan 6,
A first stroke rack 7 is disposed below the dust exhaust port 5, and a second stroke rack 8 is disposed below and rearward of the first stroke rack 7, all of which are oscillated by a drive crank 9. The swing frame 1 is integrally fixed to the swing frame 10 configured to be able to
It is configured to oscillate with zero. Further, an auxiliary grain pan 11 is disposed between the grain pan 6 and the crimp net 4, and this auxiliary grain pan 11 is also fixed to the swinging frame 10 and swings integrally with the rocking frame 10. A wind selection path 13 is formed below the grain pan 6 to guide the sorting wind from the winch 12, and also between the auxiliary grain pan 11 and the lower grain pan 6. An auxiliary air selection path 14 is formed to guide a part of the selection air. As shown in detail in FIGS. 1 and 2, the auxiliary grain pan 11 is rotatable on the swing frame 10 via a rotation shaft 15 fixed to the windward end of the sorting wind. A rotary member 15a, which is rotatably supported around the windward side as a center 16, and is fixed to both ends of the rotary shaft 15, is provided in the swing frame 10. a bolt 18 passed through the arcuate hole 17, and a wing nut 19 screwed onto this bolt 18.
Therefore, it is configured to be able to be fixed at a desired rotation angle.

Therefore, some of the grains and cut straw that have fallen from the crimp net 4 are first supplied onto the auxiliary grain pan 11, are shaken and sorted by this auxiliary grain pan 11, and then are transferred onto the grain pan 6 below. Feeds falling. At this time, auxiliary wind selection is performed by the sorting wind flowing through the auxiliary wind selection path 14, and a part of the cut straw is sent to the dust removal fan 20 side, and the remaining cut straw and grains fall onto the grain pan 6 below. The grain pan 6 oscillates and sorts the grains, and
When falling from the grain pan 6, the grains are sorted again by the sorting wind flowing through the wind sorting path 13, and the grains are sent to the first grain collecting section 2.
The first item and the second item are collected by the second item collecting section 22. In this case, if the amount of threshed material is large, the auxiliary grain pan 11 can be rotated and fixed upward to lengthen the period of oscillating sorting by the auxiliary grain pan 11, thereby increasing the effective auxiliary wind as described at the beginning. On the other hand, if the number of grains is small, the auxiliary grain pan 11 can be rotated and fixed downward to shorten the time for oscillating sorting by the auxiliary grain pan 11 and effectively perform the oscillating sorting by the lower grain pan 6. be able to.

The processed material falling from the dust outlet 5 at the end of the crimp net 4 is subjected to oscillating sorting and wind screening by the first and second stroke racks 7 and 8, and the grains are collected as first grains. Collected by Department 21, 2
The pieces are collected in the second piece collecting section 22 and returned to the handling chamber 1 by the thrower cylinder 23, while dust such as cut pieces is discharged to the outside of the machine via the dust exhaust fan 20. The waste straw after threshing is cut by the waste straw cutter 24 and discharged outside the machine.

[Brief explanation of the drawing]

The drawings show an embodiment of the threshing device according to the present invention,
FIG. 1 is a longitudinal sectional front view of the main part, FIG. 2 is a longitudinal sectional side view of the main part, and FIG. 3 is a longitudinal sectional front view of the whole. 2... Handling trunk, 4... Crimp net, 6... Grain bread, 11... Auxiliary grain bread, 12... Karawini,
13...Faze selection route, 14...Auxiliary wind selection route, 16...
Center of rotation.

Claims (1)

[Scope of utility model registration request] A crimp net 4 is stretched below the handling drum 2, a grain pan 6 is provided below the crimp net 4, and
In the threshing device in which a wind selection path 13 is formed below the grain pan 6 to guide the sorting wind from the winnower 12, an auxiliary grain pan 11 is provided between the grain pan 6 and the crimp net 4. An auxiliary wind selection path 14 is formed between the auxiliary grain pan 6 and the auxiliary grain pan 1.
A threshing device 1 is provided so as to be rotatable and fixed around its windward side as a center 16.