JP2019110873A - Thresher - Google Patents

Abstract

To solve the problem that, when using a combine for an extended period, a maintenance work is required, for removing threshed objects accumulated inside by opening a threshing chamber.SOLUTION: A thresher is provided with a selection chamber (20) for sending blast of a fan on a receiving net (12) lower part of a threshing chamber (10) supporting pivotally a threshing cylinder (11), and with a flow-down guide (40) for guiding threshed objects into the selection chamber (20), on the inside cover (43) of the threshing chamber (10). In the thresher, the flow-down guide (40) is constituted of a flow-down guide part (50a) inclined downward into the selection chamber (20), and a blowup part (50b) for guiding blast of the winnower fan toward the receiving net (12) on a lower part of the flow-down guide part (50a).SELECTED DRAWING: Figure 2

Description

  The present invention relates to a threshing device mounted on a combine or the like.

  The combine is equipped with a threshing device for threshing kernels from the harvested kernels. JP-A-2017-169485 discloses a combine threshing apparatus wherein a threshing drum is pivotally supported within a throttling chamber by being surrounded by a circular arc web, and a rocking and sorting device is provided below the threshing drum, A blower is provided to blow up. In the side wall of the chamber, a guide plate is provided for guiding the dropped grains falling from the net onto the swing sorting device so as to guide the dropped grains to the swing sorting device. (See Patent Document 1 and FIG. 5)

JP, 2017-169485, A

  In order to rock back and forth in the throttling chamber, the rocking and sorting device requires a gap between the chamber and the guide plate on the side of the chamber, and the grain is deposited in the gap to inhibit the movement of the rocking and sorting device. It will be. For this reason, when the combine is used for a long time, there is a problem that a maintenance operation is required to open the processing chamber and remove the degranulated matter accumulated inside.

  An object of the present invention is to reduce deposition of grain removal in a threshing device and reduce the maintenance operation frequency of the threshing device in a threshing device in view of the above conventional problems.

  The above-mentioned conventional problems are solved by the following technical means.

  The invention according to claim 1 is characterized in that a sorting room (20) for sending air of a small diameter is provided at the lower part of a receiving net (12) of a handling room (10) on which a threshing cylinder (11) is supported. In a threshing apparatus provided with a flow-down guide (40) for guiding a grain removal to the sorting room (20) on a cover (43), a flow-down guide for tilting the flow-down guide (40) down into the sorting room (20) A threshing device is characterized by comprising a blowing portion (50b) and a blowing portion (50b) for directing the air flow of the Karasu fan at the lower portion of the flow guiding portion (50a) to the mesh (12).

  The invention according to claim 2 is characterized in that a sorting room (20) for sending air of a small size is provided at the lower part of a receiving net (12) of a handling room (10) pivotally supporting a threshing cylinder (11) In a threshing apparatus provided with a flow-down guide (40) for guiding a grain removal to the sorting chamber (20) on a cover (43), a bulging portion which bulges into the throttling chamber (10) to the flow-down guide (40) (50c) is provided to provide a threshing device.

  In the invention of claim 1, the grain removal of grains, scales and the like threshed between the threshing drum 11 of the throttling chamber 10 and the receiving net 12 passes through the receiving net 12 and is conducted by the flow guide portion 50a of the inner cover 43. It falls toward the inside of the sorting room 20, but the air flow from the agarbage fan 18 blows up grain removal toward the net 12 at the blowout part 50b at the lower part of the flow guiding part 50a. As a result, less grains are collected by sorting in the center of the sorting room 20 and deposited on the lower part of the inner cover 43, and the frequency of maintenance work of the threshing apparatus can be reduced.

  In the invention of claim 2, the lower circular arc portion of the bulging portion 50c of the inner cover 43 directs the selection wind to the receiving net 12 as the blow-up portion 50b, so that the same effect as in claim 1 can be obtained. When it is the bulging part 50c, molding of a component is easy.

It is a back sectional view of a threshing apparatus. It is the perspective view which looked at the outer cover of the threshing apparatus from the inner side. It is the perspective view which looked at the outer cover of the threshing apparatus in 2nd Example from the inner side. It is the perspective view which looked at the outer cover of the threshing apparatus in 3rd Example from inner side. It is the perspective view which looked at the outer cover of the threshing apparatus in 4th Example from inner side. It is the perspective view which looked at the outer cover of the threshing apparatus in 5th Example from inner side. It is the perspective view which looked at the outer cover of the threshing apparatus in 6th Example from inner side. It is the perspective view which looked at the outer cover of the threshing apparatus in 7th Example from inner side.

  An embodiment of the present invention will be described based on the drawings. The principal part of the threshing apparatus 1 is shown in FIG.

  The threshing apparatus 1 is provided with a processing chamber 10 for threshing the grain supplied at the top, and is provided with a sorting chamber 20 at the lower side of the processing chamber. The sorting chamber 20 is equipped with a swing sorting unit 21. The swing sorting unit 21 has sorting members such as sheaves and straw racks, and the material after threshing is separated by a sort of wind from a pot (not shown) disposed below the swing sorting unit 21. Sort out.

  The throttling chamber 10 is provided with a threshing drum 11 which rotates around the longitudinal axis, and a net 12 which surrounds the lower half circumference of the throttling drum 11. A plurality of nets 12 are installed on the outer peripheral surface of the net 12 and the throttling drum 11. The cereal grits are threshed by the teeth 13 and the crushed grains are supplied to the sorting room 20.

  Further, a side cover 14 is disposed on the side of the processing room 10 with a net 12 and a predetermined object dropping space 39 open. On the side of the processing object drop space 39 (inside) in the side cover 14, a flow-down guide for guiding the drop of the processing object is provided.

  As shown in FIG. 2, the flow-down guide 40 includes a flow-down portion 50 a that is inclined downward along the tangential direction of the mesh 12 and a blow-up portion 50 b that is bent outward and downward from the lower end of the flow lower portion 50 a. And the horizontal support plate 51, and the upper end of the flowing portion 50a and the outer end of the support plate 51 are joined to the inner cover 43.

  FIG. 3 shows another embodiment of the flow-down guide 40, in which a bulging portion 50c is formed at the lower end of the flow-down portion 50a so as to expand in a semi-cylindrical shape, and sorting air is blown up along the lower surface of the bulging portion 50c. .

  FIG. 4 shows still another embodiment of the flow-down guide 40, in which the inclined surface of the flow-down portion 50a is narrowed, and the selection wind blows up along a slight blow-up portion 50b.

  Although the above description demonstrated the downflow guide 40 provided in the side cover 14 comprised by the left side wall, it is good to provide the same downflow guide 40 also in the right side wall.

  FIG. 5 shows an embodiment in which a guide plate 56a is added to the inner side of the lower portion 50 at a constant interval to be inclined downward as the flow down guide 40 in the embodiment of FIG. The grain of the grain is floated to facilitate dropping of the grain onto the lower portion 50a. The guide plate 56a may be provided on the entire front and rear width of the inner cover 43 or only on the rear half.

  FIG. 6 shows an embodiment of FIG. 5 in which linear guide wires 56b are densely disposed in the front-rear direction instead of the guide plate 56a. The guide wire 56b may be curved inward in an arc shape. The guide wire 56 b may be provided on the entire front and rear width of the inner cover 43 or only on the rear half.

  It is also conceivable to incline the linear guide wire 56b downward in a side view in a side view, or to sequentially change from short to long from the front to the back.

  FIG. 7 shows an embodiment in which the guide plate 56a is added to the configuration of FIG.

  FIG. 8 shows an embodiment in which arc-shaped guide wires 56ba are densely disposed at a constant interval in the configuration of FIG. 4, and straight straight guide wires 57 are sparsely disposed. In the configurations of FIGS. 2 to 4 in which the down flow guide 50 is provided with the down flow section 50a and the blowout section 50b, it is possible to arrange the guide wire 56b variously in the same manner as the above embodiment.

  In addition, the arrangement | positioning space | interval of the guide body 56 of the guide plate 56a or the guide wire 56b is taken as the space through which a grain passes at least.

  In the above embodiment, the combination of the flow-down guide 40 and the guide body 56 is described, but even if only the guide body 56 without the flow-down guide 40, the effect of reducing the deposition of grain removal can be obtained.

DESCRIPTION OF SYMBOLS 1 threshing apparatus 10 throttling chamber 20 sorting chamber 11 threshing cylinder 12 receiving net 40 downflow guide 43 inner cover 50a downflow guiding portion 50b blowout portion 50c bulging portion

Claims (2)

A sorting room (20) is provided under the net (12) of the processing room (10) on which the threshing drum (11) is pivotally supported. In a threshing apparatus provided with a flow-down guide (40) for guiding the
Downflow guide (40) is directed down into the sorting chamber (20) Downflow guide portion (50a) and air flow of the Karasu fan directed to the mesh (12) at the lower part of the downflow guide portion (50a) A threshing device characterized in that it comprises a blowing top (50b) for induction. A sorting room (20) is provided under the net (12) of the processing room (10) on which the threshing drum (11) is pivotally supported. In a threshing apparatus provided with a flow-down guide (40) for guiding the
A threshing device characterized in that a bulging portion (50c) which bulges out into the throttling chamber (10) is provided on the flow-down guide (40).

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