JPH0433722Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a threshing device for a conventional combine harvester in which the grain culm harvested by the reaping conveyance section at the front of the machine is threshed by the threshing cylinder at the rear.

Conventional technology A conventional combine harvester, which has a grain cutting and conveying section at the front of the machine and a threshing section and a sorting section at the rear, is as described in Japanese Utility Model Application No. 59-36952. , various types are known.

Problems that the invention aims to solve: Normal combine harvesters send the harvested grain culm directly to the threshing section for threshing.
The grain culm during the threshing process is in an irregular state.
The culm length also varies.

Therefore, as stated in the above publication,
If the threshing section consists of one threshing cylinder, complete threshing is not possible, and even if two threshing cylinders are installed side by side, the threshing path will not be that long and the threshing efficiency will not be as expected. The reality is that there is no improvement.

In view of these conventional problems, the present invention consists of a threshing section consisting of a first threshing cylinder and a second threshing cylinder, and distributes and transfers the grain culms supplied from the reaping and conveying section, and further transfers them in a combined manner. The object of the present invention is to provide a threshing device for a conventional combine harvester that distributes the threshing load and extends the threshing process path, thereby greatly improving threshing efficiency.

Means for Solving the Problems The present invention has the following technical means for achieving its purpose. In other words, the threshing device for a conventional combine harvester according to the present invention is a conventional combine in which a grain culm reaping and conveying section is provided at the front of the machine body, and a threshing section and a sorting section are provided at the rear thereof. The first threshing stage distributes and transfers grain culms to the left and right for threshing.
The present invention is characterized in that it is provided with a cylinder and a second threshing cylinder to which the threshing material is transferred from both left and right ends of the first threshing cylinder and threshed while being transferred rearward.

Operation As the machine moves forward, the grain culms cut by the cutting and conveying section are supplied to the rear first threshing cylinder.
In the first threshing cylinder, the grain culms are distributed and transferred in the left-right direction by the left and right transfer spiral bodies, and the first threshing process is performed. The threshed grains leak here, but the remaining threshed material is transferred from both ends of the first threshing cylinder to the second threshing cylinder, where the second threshing process is performed. In this way, the grain culm that is threshed in the first threshing cylinder and the second threshing cylinder is distributed and transferred, and then undergoes a process of combined transport, so the threshing load is distributed, and the grain culm is transferred. The route becomes longer. Therefore, the grain culms do not get stuck in the first threshing cylinder, the second threshing cylinder, and the transfer path between them, and the threshing processing capacity is extremely high.

The grains that have been threshed in the first threshing cylinder and the second threshing cylinder are sorted in a lower sorting section, and fine grains and other grains are taken out.

Example Embodiments of the present invention will be described with reference to the drawings.

In Figures 1 to 3, 1 is a grain culm reaping and transporting section, 2 is a threshing section, and 3 is a sorting section. Further to the rear, a sorting section 3 is provided below the threshing section 2.

The reaping conveyance section 1 includes a grass cutting body 4, a cutting blade 5, a grain culm scraping reel 6, a pick-up reel 7, a grain culm conveying body 8, and the like. Threshing section 2
consists of a first threshing cylinder 9 and a second threshing cylinder 10, and the first threshing cylinder 9 is connected in a direction perpendicular to the reaping conveyance section 1,
This first threshing cylinder 9 extends on the left and right sides of the reaping conveyance section 1, and its width _H1 on the left and right sides is as follows:
The width is the same as or wider than the transport width H of the reaping transport section 1.
It is about 0.75 times. Threshing first cylinder 9
1 has transfer spiral bodies 11, 11 for distributing and transferring grain culms in the left-right direction corresponding to the reaping conveyance unit 1, and has threshing processing teeth 12 throughout, and a portion corresponding to the reaping conveyance unit 1. is formed into a conical shape whose diameter becomes narrower toward the center, and outlet ports 13, 13 for the threshed material are opened at the upper portions of both ends of the cylinder chamber. 14 is the grain leakage surface.
Further, the threshing cylinder 10 has a transfer spiral body 15 formed at its starting end, and a large number of threshing teeth 16 formed throughout the cylinder chamber. A beater 18 is connected to the outlet ports 13 at both ends of the second threshing cylinder 9, and is provided within the transfer passage 17 over its entire width on the left and right sides. The entire lower surface of the cylinder chamber of the second threshing cylinder 10 is a grain leaking surface 19, and a discharge port 20 for straw waste etc. is formed at the end thereof. 21 is an auger, which extends from below the first threshing cylinder 9 to the lower end of the second threshing cylinder 10, and collects grains leaking from the first threshing cylinder 9 and the second threshing cylinder 10. are combined and transported to the sorting section 3. 22 is a swinging sorting shelf, 23 is its chia sheave, 24 is a sorting air passage, 25 is a winch, 26 is 1
The number 27 is the second exit. Exit 1 26 and 2
Each port 27 is provided with a delivery spiral body. 28 is an exhaust fan, and 29 is a dust exhaust port.

In the structure configured as described above, the grain culms cut by the cutting and conveying section 1 as the machine moves forward are
It is supplied to the first threshing cylinder 9 of the threshing section 2, and is threshed in the process of being distributed and transferred from side to side by the transfer spiral bodies 11, 11 within the first threshing cylinder 9. Then, the threshed material leaks from the leakage surface 14, and the remaining threshed material is sent out from the left and right delivery ports 13, 13, merges in the transfer path 17 by the action of the beater 18, and It is transferred to the starting end of the cylinder 10. Inside the second threshing cylinder 10, the threshing process is further carried out during the process of being transferred rearward by the transfer spiral body 15, and the threshed grains leak from the leakage surface 19, and straw waste etc. are discharged from the machine through the discharge port 20 at the end. be discharged. The grains leaking from the first threshing cylinder 9 and the second threshing cylinder 10 are collected by the auger 21 and sorted in the sorting section 3, and the fine grains are transferred to the first port 2.
6, and the others are carried out from the second port 27. Incidentally, the dust is discharged from the dust exhaust port 29 along with the exhaust air from the exhaust fan 28.

Grain culms to be threshed as described above are distributed and transferred from side to side in the first threshing cylinder 9, and then combined and transferred in the second threshing cylinder 10, so that the threshing load is dispersed and stagnation of the grain culms does not occur. , smooth threshing process. Moreover, since the grain culm transport route is long, threshing efficiency is extremely high. In addition, in the case where the first threshing cylinder 9 has a conical shape whose diameter decreases toward the center at the portion corresponding to the reaping conveyance section 1, the grain culm supplied from the reaping conveyance section 1 is drawn toward the center. As a result, grain culms are smoothly transferred from the reaping conveyance section 1 to the first threshing cylinder 9.

FIGS. 4 and 5 show other examples of what has been described above. In this embodiment, the second threshing cylinder 10 is composed of a rotating endless band 31 in which a large number of threshing processing teeth 30 are implanted.
is slanted so that the rear is higher.

If the second threshing cylinder 10 is constituted by the rotating endless band 31 as described above, the height of the second threshing cylinder 10 can be lowered, so that the threshing section 2 can be made smaller. In addition, the width of the rotating endless belt 31 is
Since it can be made equal to the full width of the cylinder 9, the threshing processing capacity can be further improved.

Effects of the invention Since the present invention has the above-mentioned technical means and works, it is possible to distribute the threshing load and extend the threshing processing route, and to greatly improve the threshing efficiency. This has extremely useful practical effects.

[Brief explanation of the drawing]

The drawings show an embodiment of the threshing device for a conventional combine harvester according to the present invention, in which FIG. 1 is a vertical sectional side view of the entire conventional combine harvester, FIG. 2 is a horizontal sectional view of the main parts, and FIG. Vertical front view of the same as above, No. 4
The figure is a longitudinal sectional side view of the entire ordinary type combine harvester showing another embodiment, and FIG. 5 is a horizontal sectional view of the main parts of the same. DESCRIPTION OF SYMBOLS 1... Reaping conveyance part, 2... Threshing part, 3... Sorting part, 8... Grain culm conveyance body, 9... Threshing first cylinder, 10... Threshing second cylinder, 11, 11...
...transfer spiral, 12...threshing teeth, 13, 13
...Delivery port, 15...Transfer spiral body, 16...Threshing processing tooth, 17...Transfer path, 18...Beater, 20
...Outlet for straw waste, etc., 21...Auger, 22...
Swinging sorting shelf, 24... Sorting air path, 25... Tang winch,
26...1st port, 27...2nd port, 28...exhaust fan, 29...dust exhaust port, 30...threshing processing tooth,
31...Rotating endless belt.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a conventional combine harvester, which has a grain culm reaping and conveying section at the front of the machine body, and a threshing section and a sorting section at the rear, the grain supplied from the reaping and conveying section. A first threshing cylinder that distributes and transfers the culm in the left and right directions for threshing, and a second threshing cylinder that receives the threshed material from both left and right ends of the first threshing cylinder and that threshes the culm while transporting it rearward. A threshing device for a conventional combine harvester, characterized in that it is provided with a. (2) The first grain culm cylinder is formed with a transfer spiral body that distributes and transfers the grain culm supplied from the reaping conveyance section in the left and right direction, and a large number of threshing processing teeth,
A threshing device for a conventional combine harvester as set forth in claim 1 of the utility model registration claim, wherein the second threshing cylinder has a transfer spiral formed on the starting end side and a large number of threshing processing teeth formed throughout. . (3) The utility model according to claim 1 or 2, characterized in that the portion of the first threshing cylinder corresponding to the reaping conveyance section is formed into a conical shape that becomes smaller in diameter toward the center. A threshing device for a regular combine harvester. (4) The ordinary type according to claim 1, 2, or 3 of the utility model registration, characterized in that the second threshing cylinder is constituted by a rotating endless band in which a large number of threshing teeth are implanted. Threshing equipment in a combine.