JPH0115302Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention includes a grain header having, for example, a reel for raking in uncut grain culms, a cutting blade, a raking auger, etc., and a reaped grain culm supply belt installed therein and connected to the header. The present invention relates to a grain culm raking device for a combine harvester, which continuously performs grain reaping and threshing operations, and includes a chamber and a threshing section equipped with a handling cylinder and a grain sorting mechanism and connected to the supply chamber.

According to the present invention, auxiliary scraping blades having protruding tips protruding outward from the auger are attached to both ends of the scraping auger that scrapes the harvested grain culms and collects them in the center of the grain header. As a result, the grain culms at both ends of the auger may be temporarily damaged due to an increase in the amount of grain culms cut by the cutting blade supplied to the auger, or due to an increase in the amount of harvested grain culms conveyed, which causes the grain culms to accumulate in the middle of the auger. Even when the grain culm is completely full, the subsequent grain culms that are sequentially supplied by the blade are forcibly raked in without causing the culm to spill forward, thereby reducing the raking loss of the reaped grain culm. The present invention aims to provide a grain culm raking device for a combine harvester that improves efficiency in harvesting operations.

An embodiment of the present invention will be described in detail below with reference to the drawings.

Fig. 1 is an overall side view of the combine harvester, and Fig. 2 is a plan view of the same. a threshing section, which is equipped with
9 is a grain tank for storing the grains of the threshing section 4 to be taken out via the grain lifting cylinder 8; 9 is a reaping section installed in the front of the lower part of the threshing section 4 so as to be movable up and down via a hydraulic cylinder 10; 11 is a driver's seat. 12 and steering handle 13
This is a driver's cab which is equipped with a driver's cab and is fixedly installed in front of the upper part of the threshing section 4.

The reaping section 9 is composed of a grain header 14 for receiving uncut grain culms, and a supply chamber 15 connected to the rear center of the header 14 to feed the reaped grain culms to the threshing section 4. The grain header 14 is equipped with a grain culm raking reel 16, a reciprocating drive type cutting blade 17, and a grain culm raking auger 18.

As shown in FIG. 3, a reaped grain culm supply belt 23 having a plurality of feed plates 22 on its outer periphery is stretched across the grain inlet passage 19 of the supply chamber 15 via a driving drum 20 and a driven drum 21. The cutting auger 18 is configured to send the cut grain culms collected in the center of the grain header 14 to the threshing section 4 by the conveyance of the supply belt 23.

As shown in FIG. 4, the scraping auger 18 has left and right spiral plates 25 and 26 wound in opposite directions around a scraping drum 24, and when the auger 18 is driven to rotate. A spiral groove 25 in which the reaped grain culm is formed by these spiral plates 25 and 26.
grain header 14 by moving it along a, 26a
The structure is such that the information is collected in the center of the screen. Further, spiral plates 25, 2 at both left and right ends of the auger 18
Auxiliary scraping blades 27, 27 are attached to the drum 6, respectively, and the blades 27, 27 are formed to have a diameter larger than the diameter of the drum 24.
The spiral plates 25, 2 are attached via bolts 28 so that the ends of the spiral plates 7, 27 protrude outside the drum 24.
6, each of which is removably fixed. At the tips of the blades 27, 27, relatively large serrated protrusions 27 that are sharp in the direction of rotation of the drum 24 are provided.
a, 27a are formed, and when the scraping auger 18 is rotated, the blades 27, 27 are configured to forcibly scrape the harvested grain culm at both left and right ends of the auger 18.

The present embodiment is constructed as described above, and uncut grain culms are introduced into the grain header 14 via the reel 16, and the culm of the uncut grain culms is cut by the cutting blade 17.
At the same time, the cut grain culm is scraped by a scraping auger 18 and collected in the center of the grain header 14, and fed to the supply belt 21, and the cut grain culm is sent to the threshing section. 4, the grains are threshed by a handling cylinder 5 and taken out to a grain tank 7. During this operation, the grain culms temporarily become full at both left and right ends of the auger 18 due to an increase in the amount of reaped grain culm supplied to the scraping auger 18 or due to retention of the grain culm during conveyance in the auger 18. When the grain culm is in a dense state, the spiral plates 25 and 26 of this auger 18
Newly reaped grain culms that are successively fed in are forcibly raked in by the raking action of the blades 27, 27 which are made to protrude further outward. Therefore, even if the harvested grain culms are densely packed at both ends of the scraping auger 18, the inconvenience in the harvesting operation, such as the culm spilling in the front, as in the conventional method, is eliminated.

As shown in the above embodiments, the present invention is a combine harvester in which the threshing section 4 is connected to the grain header 14 for receiving uncut grain culms through the supply chamber 15, and the harvested grain culms are scraped into the grain header 14. This is because auxiliary scraping blades 27 having protruding tips protruding outward from the scraping auger 18 are attached to both ends of the scraping auger 18 which is collected in the center.
Grain culms are scraped at both ends of the auger 18 due to an increase in the amount of grain culms cut by the cutting blade 17 supplied to the auger 18, or due to the grain culms staying in the middle of the auger 18 due to an increase in the amount of grain culms conveyed. Even if the grain culm becomes temporarily full, the subsequent grain culms sequentially supplied by the blade 27 can be forcibly and reliably raked in without causing the culm to spill forward. , Therefore, it is possible to reduce the raking loss of the reaped grain culm, and it is possible to achieve remarkable effects such as improving the efficiency of harvesting work.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 is an overall side view of the combine harvester, Fig. 2 is an overall plan view of the combine harvester, Fig. 3 is a cross-sectional explanatory view of the main parts, and Fig. 4 is a front view. FIG. 4... Threshing department, 14... Grain header, 15...
...supply chamber, 18...raking auger, 27...blade.

Claims (1)

[Scope of utility model registration request] In a combine harvester in which a threshing section 4 is connected to a grain header 14 that receives uncut grain culms via a supply chamber 15, both ends of a raking auger 18 are used to scrape in the reaped grain culms and collect them in the center of the grain header 14. A grain culm raking device for a combine harvester, characterized in that an auxiliary raking blade 27 having a protruding tip protruding outward from the auger 18 is attached thereto.