JPH0454764Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a second flow grain plate in a screw-type threshing machine, specifically, a screw-type sorting auger is placed below the screw-type threshing part, and an air flow is placed below the screw-type sorting auger. This relates to a second flow grain plate in a threshing machine equipped with a selection section and a first and second gutter.

Prior Art A screw auger, which was originally used to convey grain in the axial direction, can be expanded in diameter and given a predetermined rotational speed to maintain the circumferential speed necessary for the crops. In addition to the function of transporting grains, it also has a threshing function.

Also, at this time, if you change the receiving gutter part of the screw auger to a receiving net of an appropriate size for the crops, the threshed grains in the handling room will leak downward from the receiving net, and the stems and straw waste culm will be removed from the shaft. It also has a so-called sorting function that transports it in different directions and discharges it outside the machine.

This is a screw-type threshing machine.

The screw-type threshing machine as described above is equipped with a screw-type sorting auger below the screw-type threshing section, and further provided with a wind selection section and No. 1 and No. 2 gutter below the screw-type sorting auger.

The straw that leaks through the receiving net in the threshing section is sorted by a screw-type sorting auger, and only the long straw is discharged to the outside from the culm discharge port.

Problems to be solved by the invention Regarding the screw-type threshing machine as described above, 2
The culvert does not face the culm, and the part of the auger that faces the culm is also a screw, so the long straw falls from the culm in a concentrated manner, becomes a clump, and is discharged to the outside. There is a drawback that there is a lot of sorting loss because the second item is not collected from inside.

Means for Solving the Problems Therefore, the technical problem of the present invention is to provide a screw-type threshing machine with less sorting loss in a screw-type sorting auger. The technical means of the present invention to solve this technical problem is to provide a blade at the terminal end of the screw-type sorting auger, and to expose the second flow grain plate below the blade.

Effects of the invention According to this technical means, the straw is dispersed from the end of the screw-type sorting auger by the blades and does not fall in a concentrated manner, and it is dispersed and falls onto the second gutter facing downward, reducing sorting loss. This makes it possible to improve the sorting effect.

Furthermore, the blades provided at the end of the screw-type sorting auger prevent the straw from wrapping around the auger at the end.

Example The embodiments shown in the drawings will be described below.

First, the entire screw-type threshing machine shown in FIG. 1 will be explained.

The crops are raked by a raking reel 1 and cut by a cutting blade 2, and the cut crops are transferred from a raking auger 3 to a chain conveyor 5 in a feeder house 4 to a handling room 6.
The grains are transported to the warehouse and threshed using a screw-type handling drum 7.

The threshed grains fall from the receiving net 8 to the sorting auger 9, and are moved by the rotating auger 9 toward its terminal end.

During this conveyance process, grains and fine straw waste leak downward from the receiving net 10 stretched over the receiving gutter of the auger 9, and only the long straw is carried toward the culm outlet 11.

Leakage including grains that have fallen from the receiving net 10 is sorted by a winnowing fan 12 and a suction fan 18 at the end of the handling cylinder, and the grains are transferred to the first gutter 13.
Then, the second grain falls into the second gutter 14, the grains that fell into the first gutter 13 are carried to the paddy tank, and the second grain is returned to the handling room 6 through the thrower tube 15. .

16 is a crawler equipped with a thresher, 17
indicates the control section.

In the above-described threshing machine, the suction fan 18 and the blower fan 12 provided at the end of the handling drum form a sorting air passage.
A double air passage is constructed with the boundary between the two air passages, one air passage being air passage a above the uppermost gutter 13 and the other air passage being air passage b below the uppermost gutter 13.

In order to form the above-mentioned air path, a flow divider plate 19 connected to the flow plate of the first gutter 13 is provided in the case of the blower fan, and the wind force of the blower fan is divided by the flow divider plate 19 as shown by the arrow in the figure. The air is blown out toward air passages a and b at the top and bottom of the gutter 13, respectively.

The one shown in the figure has a double air passage as described above, and the grain board 20 of the first gutter is provided so that the angle thereof can be adjusted, so that the respective wind forces can be adjusted.

That is, the grain board 20 of the first gutter 13 has its base pivoted 21 on the upper edge of the gutter 13, and has a slit groove 2 at the upper end.
A bolt 23 that engages with the bolt 2 is provided on the machine frame.

Therefore, the inclination angle of the grain board 20 can be adjusted by loosening the bolt 23, and the grain board 20
When viewed from the front, the cross section has a substantially inverted triangular shape as shown in the figure.

According to the grain flow board 20 as described above, it is possible to effectively perform sorting by changing the sorting air path depending on the type of crop.

In this case, in order to perform the sorting more effectively as described above, a blade 9a is provided at the end of the auger 9, which together with the suction fan 18 can increase the wind force, and the long straw of the auger 9 can be removed from the culm outlet 11. When it is discharged, it does not fall in a concentrated manner.

However, the second flow grain plate 2 corresponds to the lever blade 9a.
4 facing the culm opening 11, the second flow grain plate 2
Since the long straw can be dispersed and dropped onto the top of the screen, the sorting efficiency can be improved.

Furthermore, the blades 9a prevent straw from wrapping around the end of the sorting auger 9.

By configuring the second flow grain board 24 so that it can be freely pulled out toward the discharge culm 11 as shown in FIG. 3, it is possible to reduce sorting loss depending on the crop.

It is best to pull out the straw to almost the bottom of the center of the culm opening 11. Then, the straw containing the second product will be
Straw that falls onto the culvert and does not contain any second material is immediately discarded to the outside through the discharge culm.

If the auger continues to the discharge culm and there are no blades, the grain will fall concentrated onto the floating board, and the falling position will be limited, but according to the proposed method, the grain will fall in a dispersed manner onto the second gutter.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of the entire screw-threshing combine harvester seen from the front. FIG. 2 is a sectional view taken along the line AA in FIG. 1, and FIG. 3 is a front view showing a modification of the device of the present invention. 7... Handling cylinder, 9... Auger, 10... Receiving net, 1
2...Blower fan, 13...First gutter, 18...Suction fan, 19...Diversion plate, 20...First flow grain plate, 24...Second flow grain plate.

Claims (1)

[Scope of utility model registration request] In a threshing machine, a screw-type sorting auger is arranged below the screw-type sorting auger, a wind sorting section is arranged below the screw-type sorting auger, and a first and second gutter is arranged, and a blade is provided at the terminal end of the screw-type sorting auger. , and a second flow grain plate in a screw-type threshing machine, characterized in that the second flow grain plate faces below the blade.