JP4530695B2 - Threshing device - Google Patents

Description

  The present invention relates to a threshing apparatus including a handling cylinder for threshing cereal grains such as rice wheat.

  Conventionally, in a threshing device equipped in a combine etc., the outer periphery of a handling cylinder equipped with a horizontal rotating shaft in front and back is concentrically surrounded by a handling net etc., and both front and rear sides of the handling cylinder are covered with vertical walls. After enclosing and forming a handling room, inserting the cereal from the cereal supply port provided on the front side of this handling room and threshing the inside of the handling room, It is designed to be pulled out from the provided grain outlet.

In addition, a scraper that rotates together with the handling cylinder is attached to the edge portion of the handling cylinder on the side of the cereal bowl discharge port in order to remove swarf that is to be wound around the rotating shaft and the member surrounding the rotating shaft. The thing is known (for example, refer patent document 1).
Japanese Utility Model Publication No. 57-15134 (page 6-9, FIG. 3)

However, the above-described conventional scraper is fixed to the recessed portion formed by indenting the end edge portion of the handling cylinder on the side of the cereal discharge port and the rear wall of the handling cylinder fitted in the recessed portion. The cross section is screwed into a gap formed between the U-shaped dish body, and the concave portion, the dish body, and the scraper constitute a means for preventing the winding of the wrinkles, but the scraper is screwed. The gap between the recessed portion of the handling cylinder and the fitting portion between the trays is not closed, and the gap portion is easily clogged with wrinkles, so that a sufficient effect as a wrinkle winding preventing device has not been obtained.

The present invention has been made for the purpose of solving the above-mentioned problems, and supports the rotating shaft of the handling cylinder on the front side plate and the rear side plate of the handling chamber, and the shaft of the rotating shaft at the end of the handling cylinder. to form a recessed portion recessed in a direction in the threshing apparatus comprising fixed to the rear side plate of the dish-shaped straw intrusion prevention member that fitted into the recessed portion, the outer periphery of the inner peripheral edge and straw intrusion prevention member of the recessed portion A scraper that rotates together with the handling cylinder is provided in a gap between the fitting part and the scraper, and a scraping surface in a radial direction perpendicular to the rotation direction of the handling cylinder is provided on the scraper, and the scraping surface is disposed between the fitting part and the gap. Is formed so as to be substantially closed in the radial direction of the barrel .

Then, the composed of L-shaped bent plate comprising a mounting surface and straw the scraping scrape surface of the scraper to the thresher, interference between the rising portion of the outer peripheral edge of the straw intrusion prevention member said scooping surface In order to avoid this, the second feature is that a notch is provided in the scraped surface .

According to the first aspect of the present invention, the inner peripheral edge of the recessed portion recessed in the axial direction of the rotating shaft formed at the end of the handling cylinder and the rear plate of the handling chamber fitted in the recessed portion of the handling cylinder are fixed. the gap between the insert portion of the outer peripheral edge of the dish-shaped straw intrusion prevention member is provided with a scraper which rotates together with the threshing drum, provided with a scrape-surface in the radial direction perpendicular to the direction of rotation of the threshing drum to the scraper, by forming so as to close substantially the clearance of the insert portion in a radial direction of the threshing drum the該掻exit face, trying Tsumaro the gap insert portion of the outer periphery of the inner peripheral edge and straw intrusion prevention member of the recessed portion As a result, it is possible to reliably scrape off the wrinkles, and the occurrence of clogging is greatly reduced. Further, since the scraper rotates together with the handling cylinder, the scraper is efficiently scraped.

Further, according to the invention of claim 2, the scraper is constituted by an L-shaped bending plate having a mounting surface to the handling cylinder and a scraping surface for scraping the scissors, so that the cost can be reduced. in order to avoid the rising portion of the outer peripheral edge of the intrusion prevention member and interference with the scooping surface, by providing the notch on the scooping surface, the outer periphery of the inner peripheral edge and straw intrusion prevention member of the recessed portion It is possible to scrape off the wrinkles that are efficiently clogged in the overlapping portion without reducing the radial blockage rate of the handling cylinder in the gap between the fitting portions.

  Embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, inside the threshing device 1 equipped in a combine or the like, a rotating shaft 2 that is horizontally front and rear is mounted on a cylindrical handling cylinder 3, and an outer peripheral surface of the handling cylinder 3. 3 a is surrounded by a handling net 4 formed in a semicircular arc concentric with the handling cylinder 3 and a thin steel plate 5 curved in a semicircular arc concentric with the handling cylinder 3.

  Further, the rotating shaft 2 of the handling cylinder 3 is pivotally supported on the front side plate 7 and the rear side plate 8 of the handling chamber 6 integrally formed with the steel plate 5, and the grain is fed from the grain supply port 9 provided on the front side of the handling chamber 6. After the pestle is inserted and threshing is performed in the handling chamber 6, the crushed cereal is pulled out of the shed throat discharge port 10 provided on the rear side of the handling chamber 6 and inherited by an unillustrated slag transporting device. It is like that.

  And, when the tip side of the cereal is supplied to the handling chamber 6 in a posture along the rotation direction of the handling cylinder 3 (see the arrow in FIG. 2) through the feed chain 11 arranged side by side on the one side of the handling chamber 6, While the cereals proceed in the communication groove 12 that communicates the cereal supply port 9 and the cereal discharge port 10, the outer surface 3 a of the handling cylinder 3 protrudes radially with respect to the rotating shaft 2 of the handling cylinder 3. The grains are shed from the tip side of the cereal by the plurality of teeth 13.

Moreover, the recessed part 3b dented in the axial direction of the rotating shaft 2 of the handling cylinder 3 is formed in the terminal end of the handling cylinder 3 by the side of the cereal discharge port 10, and the rear side plate 8 of the handling chamber 6 is formed in this recessed part 3b. while fitted a dish-shaped straw intrusion prevention member 18 formed by fixing, as shown in FIGS. 1 to 3, the periphery (inner periphery) of the threshing drum 3 3c and the peripheral edge (outer straw Prevention 18 Periphery) A scraper 21 is attached as a scissor scraping means for substantially closing the gap S between the fitting portion and 18c in the radial direction of the handling cylinder 3.

The scraper 21 is a scissor scraping means for scraping off the scissors to be wound around the rotating shaft 2 of the handling cylinder 3 or a member surrounding the rotating shaft 2, and the shape thereof is as shown in FIG. It is composed of an inexpensive L-shaped bending plate, and a notch C1 for adjusting the front and rear attachment positions is provided on the attachment surface 21a which is the long side. Further, a fitting portion between the peripheral edge 3c of the above-described handling cylinder 3 and the peripheral edge 18c of the rod entry preventing body 18 is provided by a radial scraping surface 21b which is a short side of the scraper 21 and perpendicular to the rotation direction of the handling cylinder 3. In order to substantially block the gap S of the scraper 21 and to avoid interference between the rising portion 18a for preventing soot intrusion formed at the end of the peripheral edge 18c of the soot entry preventing body 18 and the scraping surface 21b of the scraper 21, A cutout C2 is provided in the scraping surface 21b. The scraper 21 can be easily attached to the inside of the peripheral edge 3c of the handling cylinder 3 with the handling teeth 13 protruding from the outer circumferential surface 3a of the handling cylinder 3 and its mounting surface 21a being fastened together, and thus has excellent maintainability. ing. Further, since the scraper rotates together with the handling cylinder, the scraper is efficiently scraped.

According to the scraper 21 configured as described above, the clearance S between the fitting portion between the peripheral edge 3 c of the recessed portion 3 b and the peripheral edge 18 c of the scissors intrusion prevention body 18 formed at the terminal end of the handling cylinder 3 with respect to the rotation direction of the handling cylinder 3. it is possible to substantially closed in the radial direction of the threshing drum 3 by the radial scraping surface 21b orthogonal Te, straw clogging is by the scooping surface 21b to the can pay scraped securely straw to be Tsumaro into the gap S Occurrence is greatly reduced.
Further, the scraper 21 is composed of an L-shaped bending plate having a mounting surface 21a for the handling cylinder 3 and a scraping surface 21b for scraping the heel , so that the cost can be reduced and the periphery of the heel intrusion prevention body 18 can be reduced. to avoid forming in 18c ends the rising portion 18a for straw intrusion prevention interference with the scooping surface 21b, by providing the notch C2 in the scooping surface 21b, the peripheral edge 3c and straw of the recessed portion 3b It is possible to efficiently scrape off the wrinkles that are to be clogged in the gap S without reducing the radial blockage rate of the handling cylinder 3 in the gap S of the fitting portion with the peripheral edge 18c of the intrusion prevention body 18. .

A side sectional view of a threshing device. The longitudinal cross-sectional view of a threshing apparatus. The principal part side sectional view which shows a winding prevention means. The perspective view of a scraper.

Explanation of symbols

2 Rotating shaft 3 Handling cylinder 3b Recessed part 3c Terminal edge 6 Handling chamber
7 Front plate 8 Rear plate 18 藁 Intrusion prevention body 18c Periphery 18a Rising portion 21 Scraper C2 Notch S Gap

Claims (2)

The rotating shaft (2) of the handling cylinder (3) is supported by the front side plate (7) and the rear side plate (8) of the handling chamber (6), and the end of the handling cylinder (3) In the threshing device, which is formed by forming a recessed portion (3b) recessed in the axial direction, and fixing a dish-shaped pestle entry preventing body (18) fitted to the recessed portion (3b) to the rear plate (8), the recess (3b) of the inner peripheral edge (3c) and the insert portion of the gap between the outer periphery (18c) of the straw intrusion prevention member (18) (S), the scraper (21) which rotates together with thresher (3) The scraper (21) is provided with a radial scraping surface (21b) perpendicular to the rotation direction of the handling cylinder (3), and the scraping surface (21b) is provided with a gap (S) between the fitting portions. A threshing device formed so as to be substantially closed in a radial direction of the handling drum (3) . Together they comprise a L-shaped bent plate consisting mounting surface and (21a) scrape surface raking straw and (21b) of the scraper (21) to the thresher (3), the outer straw intrusion prevention member (18) The cutout surface (21b ) is provided with a notch (C2) so as to avoid interference between the rising portion (18a) at the end of the peripheral edge (18c) and the scraping surface (21b). The threshing device described.

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