JP2010239938A - Cutting and discharging apparatus of straw cutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems that in a straw cutter axially mounting a cutter shaft and a raking rotor shaft in parallel to constitute a cutting part, a straw weight of stock base part is large, drop and discharge to a position just below a stock base is easily carried out, however, diffusion and discharge to an ear tip side area is hardly performed and uniform diffusion and discharge in the traveling width of combine harvester is hardly carried out. <P>SOLUTION: The cutting and discharging apparatus of straw cutter has a constitution that a guide plate 8 for discharging and guiding cut straws downward to the rear is arranged at the front side of the stock base part of the cutting part 3, the exhaust port 10 of a threshed dust discharging machine 9 is disposed below the guide plate 8, a triangular guide plate 12 formed in an inside downslope is laid in a corner interval part 11 between a rear cover part 4 at the stock base part side and a side cover part 5 at the outside of the rear cover part, cut straws of stock base discharged from the guide plate 8 side are placed on dust exhausting air that blows out from the exhaust port 10 toward the triangular guide plate 12 to guide the cut straws to the ear tip side and are diffused and discharged to the ear tip side in a diffusion chamber 7. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cutting / discharging device for a waste cutter that disperses and discharges evenly waste in a field scene of a harvested culm while receiving a threshed waste of combine.

  In the combine staking cutter, an arc shape extends from the stock side side cover to the rear side rear cover part of the discharge cover at the corner interval part on the stock base side in the diffusion chamber where the exhaust port of the threshing dust collector is viewed. There is known a technique for forming a curved air blowing guide and diffusing and discharging stock-cut straw to the tip side region (see, for example, Patent Document 1).

JP2003-134926A (first page, FIG. 1)

  In a cutting device of a waste cutter that cuts a cutter while supplying the cutter shaft and the driven rotor shaft in parallel to form a cutting portion and supplying the waste along the cutting portion, Although the drainage weight of the base part is large, it is easy to fall and discharge to the position immediately below the stock, but it is difficult to diffuse and discharge to the tip side region, and it is difficult to perform uniform diffusion and discharge over the combine traveling width. Even if an arcuate curved air blowing guide as in the cited technique is provided, the amount of stock-cutting straw falling directly below the air blowing guide is large, and it is difficult to diffuse and discharge.

  According to the first aspect of the present invention, the rear cover portion 4 on the rear side and the discharge cover portions 6 of the side cover portions 5 on the left and right sides are provided below the cutting portion 3 for mounting the cutter shaft 1 and the driven rotor shaft 2 in parallel. In the cutting device of the evacuation cutter that forms the diffusion chamber 7 covered with a guide plate 8, a guide plate 8 is provided on the front side of the stock portion of the cutting portion 3 to guide the discharge of the cutting straw to the lower rear side. The air outlet 10 of the threshing dust remover 9 is looked over and formed on the inner descending inclined surface over the corner interval portion 11 between the rear cover portion 4 on the stock base side and the outer side cover portion 5. And the stock cutting straw discharged from the guide plate 8 side is blown out toward the triangular guide plate 12 from the exhaust port 10 and guided to the tip side. The diffusion chamber 7 is diffused and discharged to the tip side region. The configuration of the cutting discharge device for culm cutter. By driving the threshing dust remover 9 of the combine, air is exhausted from the air exhaust port 10 toward the triangular guide plate 12 side of the diffusion chamber 7, and is guided to the triangular guide plate 12 and the like, and is guided to blow downward toward the tip side. . When the waste supplied to the upper cutting part is cut short and dropped into the lower diffusion chamber 7, it is diffused and discharged to the tip end region by being blown into the diffusion chamber 7. In such diffusion and discharge of the cutting straw, the cutting straw cut as the stock base side of the cutting portion is received by the lower guide plate 8 and discharged and guided to the upper surface of the triangular guide plate 12 on the lower rear side. Here, the air is diffused and discharged to the tip side region by the air blown from the exhaust port 10 side. Since this triangular guide plate 12 is formed on the inner downward inclined surface in the corner interval portion 11 on the stock base portion side of the discharge cover 6, this inclined surface is formed long and the inclined lower edge is directed toward the tip side. It can be formed in a wide range, and the diffusion and discharge of the cut straw to the tip side can be performed accurately and smoothly.

  The invention described in claim 2 is characterized in that the guide plate 8 is provided with urging means 13 for pressing the guide plate 8 toward the rear stock-side cutting section 3 side. In the cutting action of the waste in the cutting part 3, when the amount of cutting straw increases or the cutting straw is scraped out in the form of a nodule, the guide plate 8 moves downward against the biasing means 13. Is pushed open to smoothly drop and discharge the cut straw. When the cutting straw is small, the opening of the guide plate 8 is made small, the discharge guide angle of the cutting straw is maintained at a gentle inclination, and the discharge guide to the triangular guide plate 12 is performed accurately.

  According to a third aspect of the present invention, an appropriate width of cutting straw can be scraped between the stock side edge of the guide plate 8 and the stock side side cover portion 5 of the discharge cover 6. A discharge interval 14 is formed, and the air exhaust port 10 is looked into the front lower portion of the scraping interval 14. The cut straw cut by the cutting unit 3 is dropped into the lower diffusion chamber 7 and diffused into the tip side region by the air blown out from the exhaust port 10 and guided by the triangular guide plate 12 through the diffusion chamber 7. Discharged. At this time, a part of the heavy and thick cut straw of the stock base part is dropped below the widely formed scraping interval 14 without the guide plate 8, and the scraping interval 14 is moved backward from the exhaust port 10. The wind is blown off to the upper surface side of the triangular guide plate 12 by the directly blown wind. Due to the formation of the scraping interval 14 and the exhaust wind force that blows out 14 parts of the scraping interval, the stock base portion cutting straw can be quickly diffused and discharged.

  According to the first aspect of the present invention, the cutting straw having a large weight and bulk on the stock base side is discharged and guided to the upper surface of the triangular guide plate 12 on the lower rear side by the guide plate 8 below the cutting unit 3. The lower end edge of the triangular guide plate 12 is inclined and exhausted to the tip side region of the diffusion chamber 7 by being blown out from the air outlet 10 of the duster 9 toward the triangular guide plate 12. Can be formed widely toward the tip side, and the diffusion and discharge of the cut straw toward the tip side can be performed accurately and easily. Further, the corner space 11 formed between the rear cover 4 and the side cover 5 of the discharge cover 6 forming the diffusion chamber 7 is connected by a triangular guide plate 12, so that the weight Even when a large cut straw or a strong dust wind pressure from the wind outlet 10 is received, the rigidity can be increased and a simple and stable structure of the discharge cover 6 can be obtained.

  According to the second aspect of the present invention, a guide plate 8 that is pressed toward the closing side by the biasing means 13 is provided below the cutting portion 3 on the stock side, and resists the pressing force by the biasing means 13. Since the guide plate 8 is pushed open and the cut straw is dropped and discharged and guided to the triangular guide plate 12, the discharge guidance of the stock base portion cutting straw to the triangular guide plate 12 can be performed accurately, and the cutting is performed. When the amount of straw increases and the discharge resistance increases, the opening rotation of the guide plate 8 against the urging means 13 can be increased, and the cut straw discharged from the cutting portion 3 can be discharged smoothly. Can reduce clogging. Further, since the guide plate 8 is provided on the lower side of the cutting portion 3 by the biasing means 13, the guide plate 8 is maintained in a state where it can be swung or easily vibrated by vibrations of the airframe, etc., and smooth discharge guidance of the cutting straw is provided. Can be done.

  According to a third aspect of the present invention, the cutting straw on the side of the stock portion cut by the cutting portion 3 is guided by the wind pressure blown directly from the air discharge port 10 to the upper surface side of the triangular guide plate 12 through the scraping interval 14. Therefore, it is possible to reduce the falling discharge resistance of the cutting straw by the side edge of the guide plate 8 on the scraping interval 14 and to quickly and smoothly diffuse and discharge the cutting straw.

The diffusion chamber inside perspective view of a waste cutter. The rear view of a waste cutter. The side view. The top view of the diffusion chamber part.

  Based on the drawings, the combine threshing device 15 is arranged on the rear side of the reaping device, and inherits the cereals fed from the rear end of the conveying device that conveys the reaped cereals, and feeds them backward. The cereals conveyed by the feed chain 16 are supplied from the conveying port 17 into the threshing chamber 19 in which the handling cylinder 18 is mounted on the shaft 20 and conveyed threshing while being conveyed backward. At the rear end of the threshing chamber 19, a squeezing device 21 is provided facing the tip side rearward, and the threshing slaughtered waste is inherited and conveyed backward. A sorting chamber 22 for sorting threshing is provided below the evacuation device 21, and a threshing dust remover 9 is provided on the stocker side of the sorting chamber 22, so that suction sorting dust in the sorting chamber 22 is collected. The discharge or the exhaust action can be performed backward from the exhaust port 10.

  The waste cutter is configured to form the cutting portion 3 by mounting the cutter shaft 1 on which the cutter disk 23 is disposed and the scraping rotor shaft 2 on which the scraping rotor 24 is disposed in parallel. A box-shaped cutter box 25 that is mounted on the cutter shaft 1 and the take-up rotor shaft 2 and is long in the slimming direction is detachably provided on the rear side of the sorting chamber 22 at the rear end of the scouring device 21 of the threshing device 15. . An attachment pin 26 is provided on the tip side portion of the cutter box 25, and the cutter box 25 can be pivoted rearward around the attachment pin 26 to open the front surface of the cutter box 25. Further, a hook 27 is provided on the front side of the stock box side of the cutter box 25, and the mounting posture can be fixed by engaging with the pin 28 of the sorting chamber 22 side frame.

  On the upper side of the cutter box 25 is provided a switching plate 30 that rotates up and down around a switching shaft 29 along the slimming slimming direction. By rotating the switching plate 30 downward, the rejection The waste discharged by the device 21 can be transported and carried over the upper surface of the switching plate 30 to the rear side of the cutter box 25. By rotating the switching plate 30 upward, The scissors are guided to the lower surface of the switching plate 30 and guided to the lower cutting portion 3.

  Here, the diffusion chamber 7 covered with the rear cover 4 on the rear side and the discharge cover 6 of the side covers 5 on the left and right sides is provided below the cutting part 3 for mounting the cutter shaft 1 and the take-in rotor shaft 2 in parallel. In the rejection cutter to be formed, a guide plate 8 for discharging and guiding the cutting straw rearward and downward is provided on the front side of the stock base portion of the cutting portion 3, and the exhaust port 10 of the threshing dust remover 9 is provided below the guide plate 8. In addition, the triangular guide plate 12 formed on the inner downward inclined surface is provided over the corner interval portion 11 between the rear cover portion 4 on the stock base side and the outer side cover portion 5, The stock cutting straw discharged from the guide plate 8 side is blown out toward the triangular guide plate 12 from the exhaust port 10 and guided to the tip side, and the inside of the diffusion chamber 7 is placed on the tip side. Cutting and discharging of a waste cutter characterized by diffusion and discharge to the area The configuration of the apparatus. By driving the threshing dust remover 9 of the combine, air is exhausted from the air exhaust port 10 toward the triangular guide plate 12 side of the diffusion chamber 7, and is guided to the triangular guide plate 12 and the like, and is guided to blow downward toward the tip side. . When the waste supplied to the upper cutting part is cut short and dropped into the lower diffusion chamber 7, it is diffused and discharged to the tip end region by being blown into the diffusion chamber 7. In such diffusion and discharge of the cutting straw, the cutting straw cut as the stock base side of the cutting portion is received by the lower guide plate 8 and discharged and guided to the upper surface of the triangular guide plate 12 on the lower rear side. Here, the air is diffused and discharged to the tip side region by the air blown from the exhaust port 10 side. Since this triangular guide plate 12 is formed on the inner downward inclined surface in the corner interval portion 11 on the stock base portion side of the discharge cover 6, this inclined surface is formed long and the inclined lower edge is directed toward the tip side. It can be formed in a wide range, and the diffusion and discharge of the cut straw to the tip side can be performed accurately and smoothly.

  The guide plate 8 is provided with urging means 13 for pressing the guide plate 8 toward the rear stock-side cutting section 3 side. In the cutting action of the waste in the cutting part 3, when the amount of cutting straw increases or the cutting straw is scraped out in the form of a nodule, the guide plate 8 moves downward against the biasing means 13. Is pushed open to smoothly drop and discharge the cut straw. When the cutting straw is small, the opening of the guide plate 8 is made small, the discharge guide angle of the cutting straw is maintained at a gentle inclination, and the discharge guide to the triangular guide plate 12 is performed accurately.

  Further, between the stock side edge of the guide plate 8 and the stock side side cover part 5 of the discharge cover 6, a scraping interval 14 capable of suitably scraping a cut straw of width is formed, The exhaust port 10 is looked into the front lower part of the scraping interval 14. The cut straw cut by the cutting unit 3 is dropped into the lower diffusion chamber 7 and diffused into the tip side region by the air blown out from the exhaust port 10 and guided by the triangular guide plate 12 through the diffusion chamber 7. Discharged. At this time, a part of the heavy and thick cut straw of the stock base part is dropped below the widely formed scraping interval 14 without the guide plate 8, and the scraping interval 14 is moved backward from the exhaust port 10. The wind is blown off to the upper surface side of the triangular guide plate 12 by the directly blown wind. Due to the formation of the scraping interval 14 and the exhaust wind force that blows out 14 parts of the scraping interval, the stock base portion cutting straw can be quickly diffused and discharged.

  A discharge cover 6 is attached to the lower side of the cutter box 25 to constitute the diffusion chamber 7. The discharge cover 6 is made of sheet metal or resin plate and is suspended from the outer peripheral surface of the cutter box 25. The front side surface of the diffusion chamber 7 is formed in an open shape and has a U-shape in plan view because the rear wall 31 of the sorting chamber 22 of the threshing device 15 is configured. In addition, the side cover portion 5 on the stock side has an inclined form in which the lower end edge portion is positioned toward the tip, and a rubber plate 32 is attached to the lower end portion so as to approach the field scene.

  The triangular guide plate 12 provided in the corner portion spacing portion 11 of the discharge cover 6 is provided at the tip side lower side and the front side lower side across the inner surface of the diffusion chamber 7 between the rear cover part 4 and the side cover part 5 located on the stock side. It is provided so as to form a downward inclined surface, and the front and rear inclined plate edges 33 and 34 are integrally attached and fixed to the side cover portion 5 and the rear cover portion 4 by welding or screws 45 or the like. The inclination angle of the triangular guide plate 12 can be appropriately set according to the diffusion region of the cutting straw. In the example shown in the figure, the cutting straw on the stock side is located near the center line L position of the cutting width of the aircraft. It is configured to guide you. The lower end edge 35 of the triangular guide plate 12 is formed in a straight line in an oblique direction from the front position of the side cover portion 5 to near the center line L position of the rear cover portion 4. The triangular guide plate 12 can increase the rigidity of the corner interval portion 11 of the discharge cover 6 configured in a triangular pyramid shape.

  The air exhaust port 10 of the threshing dust remover 9 is looked toward the rear lower side at the front side of the diffusion chamber 7 on the stock base side, and toward the upper surface of the triangular guide plate 12 facing the air exhaust port 10. Can be blown out. Further, the air outlet 10 is opened at a position close to the inner surface of the side cover 5 on the stock side, and the stock cut straw that is cut and discharged at the stock side end of the cutting part 3 To blow away.

A guide plate 8 having an appropriate width and height is suspended on the front lower portion of the cutting portion 3 on the stock base side of the cutter box 25, and the lower end edge 36 of the guide plate 8 is placed on the triangular guide plate 12. Form to look into. The upper end of the guide plate 8 is attached to the front cover 38 of the cutter box 25 via a hinge 37, and is configured to be pressed toward the cutting portion 3 side by a plate spring 13 as an urging means attached to the front cover 38. It is said. This guide plate 8 receives the stock cutting straw cut off from the cutting part 3 on the upper rear side and guides it to the lower rear side, and forms an appropriate cutting interval 39 between the cutting part 3 and Further, the lower edge 36 is bent or curved to form a gently inclined surface.
The guide plate 8 forms a scraping interval 14 having an appropriate width between the stock cover side cover 5 and the stock cover side cover 40 of the cutter box 25. The original cut straw is easily dropped directly to the rear portion opposite to the air outlet 10 and is easily subjected to the blowing action of the stock cut straw by the blown-out wind force.

  In the form in which the side cover portion 5 on the stock side is inclined inward, the distance from the side edge 41 of the guide plate 8 provided inside the side cover portion 5 becomes narrow, so that it becomes a resistance to discharging the cut straw. It becomes easy. In order to prevent this, the side edge 41 of the guide plate 8 is inclined inward and downward to form a wide space with the side cover portion 5. Even if there is a cut straw that falls or scatters between the side edge 41 of the guide plate 8 and the side cover portion 5, the resistance of the cut straw or the clogging is eliminated, and the diffusion discharge to the tip side is eliminated. Can be performed smoothly.

  A weight 42 made of a round bar is fixed to the back side (front side) of the lower edge 36 of the guide plate 8, and the guide plate 8 can be easily rotated and swinged around the hinge 37 by vibration or swinging of the airframe. In this configuration, mud soil, straw scraps, and the like which are about to adhere by swinging of the guide plate 8 are prevented.

DESCRIPTION OF SYMBOLS 1 Cutter axis | shaft 2 Rotor axis | shaft 3 Cutting | disconnection part 4 Rear cover part 5 Side cover part 6 Discharge cover part 7 Diffusion chamber 8 Guide plate 9 Threshing duster 10 Air exhaust port 11 Corner | interval space | interval part 12 Triangular guide plate 13 Energizing means (spring)
14 Scraping interval

Claims (3)

  Below the cutting part (3) for mounting the cutter shaft (1) and the take-in rotor shaft (2) in parallel, the rear cover part (4) on the rear side and the discharge cover parts on the side cover parts (5) on the left and right sides (6) In the cutting and discharging apparatus of the waste cutter that forms the diffusion chamber (7) covered with (6), the guide plate (8) for discharging and guiding the cutting straw rearward and downward on the front side of the stock portion of the cutting portion (3) And the wind outlet (10) of the threshing dust remover (9) under the guide plate (8), the rear cover part (4) on the stock base side, and the outer side cover part The triangular guide plate (12) formed on the inner descending inclined surface is provided over the corner interval portion (11) between (5) and the stock cutting straw discharged from the guide plate (8) side, Put on the dust exhaust that blows out from the air outlet (10) toward the triangular guide plate (12) and guides it toward the tip. The diffusion chamber (7) in the cutting discharge device for Hai稈 cutter characterized by diffuse discharged to the tip side region of.   The said guide plate (8) is provided with the urging means (13) which presses this guide plate (8) to the stock | stock-source side cutting | disconnection part (3) side of the back side. Cutting and discharging device of the waste cutter.   Between the stock side edge of the guide plate (8) and the stock side side cover part (5) of the discharge cover (6) 14), and the discharge port of the exhaust cutter according to claim 1 or 2, wherein the exhaust port (10) is looked into the front lower part of the scraping interval (14).

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