JPH0418355Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention relates to a crop intake finger in a raking auger of a combine harvester.

(Prior technology) The crop is raked with a raking reel and cut with a cutting blade, and the entire crop is fed from the raking auger to a handling room equipped with a screw-type handling cylinder by a chain conveyor in a feeder house and threshed. The raking auger in the type axial flow combine is equipped with a raking finger that protrudes from the auger drum, and in order to convey the crop from the rear of the platform to the feeder house, the most retracted direction of the finger is generally toward the feeder house. It faces the center of the drum.

(Problems to be Solved by the Invention) The above-mentioned raking finger is provided at the center of the auger drum, and is designed to rake out the crops brought to the center by the auger spiral into the feeder house.

However, since there are no raking fingers at both ends of the auger drum, there is a drawback that the harvested crops stagnate in front of the auger and are not taken into the auger spiral.

(Means for solving the problem) Therefore, the technical problem of the present invention is to provide a combine harvester with a raking auger that allows the harvested crops to be easily taken into the auger spiral. The technical means of the present invention to solve the technical problem is to provide a crankshaft mounted on the spiral part of the scraping auger with scraping fingers that rotate offset from the auger drum and pass through the auger drum. In addition, the most protruding direction thereof is horizontal or upward, and the spiral is protruded in front of the spiral conveying surface.

(Example) First, a conventional full-feed type axial flow combine shown in FIG. 7 will be explained.

The crops are raked by a raking reel 1 and harvested by a cutting blade 2, and the cut crops are conveyed from a raking auger 3 to a handling room 6 by a chain conveyor 5 in a feeder house 4, and then by a screw-type handling drum 7. Threshed.

The threshed grains fall from the receiving net 8 to the swinging sorting board 9, and are sorted by the blower fan 10 and the swinging sorting board 9. During this sorting process, grains and fine straw waste leak downward from the sorting plate, and only long straw is carried toward the dust outlet 11.

Leakage including grains that have fallen from the sorting board is subjected to sorting air by a blower fan 12 like a winnowing machine, and the grains fall into the first gutter 13 and the second gutter falls into the second gutter 14.
The grains that have fallen into the first gutter 13 are carried to the paddy tank by a grain frying conveyor, and the second grains are returned to the swing sorting board 9 through the thrower tube 15.

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

Further, the discharge culm portion of the handling chamber is composed of a discharge vane 18 at the rear end of the handling cylinder and a casing 19.

The scraping auger 3 of the combine harvester as described above has
As shown in Fig. 4, the scraping finger 20 is connected to the auger drum 2.
The trajectory A of the finger 20 is provided at the center of the feeder house drum 2 in order to convey crops to the feeder house drum 2.
Facing the center of 3.

In addition to the center finger mentioned above, this proposal also includes
The auger drum 2 is attached to the spiral part 22 at both ends of the scraping auger.
A scraping finger 24 that rotates while being offset from the auger drum is provided on the crankshaft 27 of the auger drum.

The side finger 24 rotates drawing a trajectory B as shown in the third figure, and its most protruding position is directed upward. By providing such side fingers 24, the harvested crops can be taken into the auger spiral without being stagnant in front of the auger. Although the most protruding position is shown facing upward, it may also be horizontal.

Note that the crank offset amounts of the center finger 20 and side fingers 24 are as shown in the figure.
By chance, r ₁ = r ₂ , but this is not the only option, and the finger length is not necessarily l ₁ = l ₂ .

Further, the fingers 20 and 24 are attached to a crankshaft 27 and rotated as shown in FIG. 2, and the phase can be changed by a phase changing shaft 28 of the crankshaft 27.

Further, at both ends of the conventional scraping auger 3, anti-wrapping plates 25 are provided on the platform side plates 26 as shown in FIG. 25, there is no dead space from the spiral start end to the platform side plate 26, and the intake culm, which tends to stagnate, can be conveyed smoothly. Moreover, the straw is no longer wrapped in the gap between the spiral starting end and the wrapping prevention plate.

(Effect of the invention) According to this technical means, the center finger uses the auger spiral to scrape out the crops gathered in the center toward the feeder house, and the side fingers allow the harvested crops to stagnate in front of the auger. This has the advantage that it can be quickly taken into the auger spiral without any problems.

[Brief explanation of the drawing]

Figures 1 and 2 are a plan view and a cross-sectional view of the proposed scraping auger, Figure 3 is a front view of the scraping auger section with the proposed scraping finger, and Figure 4 is a conventional scraping auger with the scraping finger. FIG. 5 is a side view of a conventional scraping auger, FIG. 6 is a side view of an improved scraping auger, and FIG. 7 is an overall view of a full-feed type axial flow combine harvester. 1... Scraping reel, 2... Cutting blade, 3... Scraping auger, 4... Feeder house, 5... Chain conveyor, 6... Handling room, 7... Screw-type handling barrel, 20... Center finger, 21... Scraping auger drum, 22... Spira, 23... Feeder house drum, 24... Side finger.

Claims (1)

[Scope of utility model registration request] Scraping fingers that rotate offset with respect to the auger drum are provided on the spiral portions at both ends of the scraping auger and are mounted on a crankshaft that extends through the auger drum, and the most protruding direction thereof is horizontal or upward. The crop intake finger of a combine harvester's raking auger was protruding in front of the spiral conveying surface.