JP2010239939A - Cutting and discharging apparatus of straw cutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems that in a form in which a diffusion guide plate is arranged behind a diffusion rotor and cut straws released by the rotation of the diffusion rotor are dispersed and discharged to a position near an ear tip side, since release force of the cut straws released by the rotation of the diffusion rotor is strong, the cut straws are frequently released through an interval part between the lower end part of the rear diffusion guide plate and a field surface below the lower end part upward to the rear and scattered and in this form, cut straws at a stock base side reduce drop and dispersion action on a position near an ear tip side and hardly maintain a uniform dispersion effect. <P>SOLUTION: The cutting and discharging apparatus of straw cutter has a constitution that the diffusion rotor 2 for receiving cut straws and diffusing and releasing the cut straws to an area near an ear tip side and a guide cover 3 for covering a diffusion and releasing part behind the diffusion rotor are disposed below a cutter shaft 1 for receiving supply of threshed straws and cutting the threshed straws and a plurality of suppression plates 4A and 4B each independently longitudinally rotatable facing a stock base side and an ear tip side are hung at the rear lower end part of the guide cover 3. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cutting and discharging device for a cutting cutter that receives a threshed waste of combine and cuts it shortly while distributing and discharging in a uniform layer in a field scene of a harvested crop.

  In a waste cutter with a configuration in which a cutter shaft in which a large number of cutter disks are arranged in the axial direction is rotated to cut the waste supplied along the cutter shaft in parallel, the diffusion rotor is disposed below the cutting portion. There is known a technique (see, for example, Patent Document 1) in which a diffusion guide plate is provided that diffuses and discharges the cut straw on the stock side to the tip side position or guides it close to the ground.

JP 2008-301730 A

  In a configuration in which a diffusion guide plate is provided on the rear side of the diffusion rotor and the cutting straw released by the rotation of the diffusion rotor is dispersed and discharged to the position closer to the tip, the cutting straw released by the rotation of the diffusion rotor is used. Since the output power of the power is strong, it is often discharged and scattered to the rear upper part through the space between the lower end portion of the rear diffusion guide plate and the farm field below. In this embodiment, the action of falling and dispersing the cut straw on the strain side toward the tip side is lowered, and it is difficult to maintain the uniform dispersion effect.

  The invention according to claim 1 is a diffusion rotor 2 that receives the cutting straw and diffuses and discharges it toward the tip side region below the cutter shaft 1 that receives and cuts the threshing waste, and the diffusion on the rear side. A guide cover 3 that covers the discharge portion is provided, and a plurality of restraining plates 4A and 4B that are independently pivotable back and forth are provided at the rear lower end portion of the guide cover 3 so as to face the stock side and the tip side. It is set as the structure of the cutting discharge apparatus of the waste cutter characterized by hanging. When the waste discharged from the threshing device is supplied to the cutting unit, the cutter shaft 1 is cut short by a rotating cutter disk and dropped. Below this cutting part, the diffusion rotor 2 rotates, receives the cutting straw that is cut and dropped, guides it to the guide cover 3, diffuses and discharges it toward the tip side and discharges it to the uniform layer. At this time, the cutting straw released from the lower end portion of the guide cover 3 to the rear is suppressed by the restraining plates 4A and 4B suspended from the lower end portion of the guide cover 3, and the flying to the upper rear portion of the guide cover 3 is suppressed. Prevent outage. In addition, since the stock-side restraint plate 4A and the tip-side restraint plate 4B are independently pivotable and swingable, the stock-side restraint plate 4A is not restricted by the open rotational state of the stock-source side restraint plate 4A. This makes it easy to perform the opening rotation of the suppression plate 4B, and to smoothly perform the diffusion and discharge to the tip side region.

  The invention according to claim 2 is different in the material, shape, weight, or suspension form of the tip side restraining plate 4B with respect to the strainer side restraining plate 4A, and the tip side restraining plate 4B is opened. It is characterized by setting the moving angle to be large or to facilitate opening and turning. As described above, the waste supplied along the direction of the cutter shaft 1 is cut short and dropped, and is diffused and discharged widely by the rotation of the diffusion rotor 2 to be guided to the guide cover 3 and discharged. At this time, the cutting straw that is about to be discharged rearward from the lower end portion of the guide cover 3 receives blocking resistance by the restraining plates 4A and 4B, is prevented from scattering to the upper rear portion, and quickly diffuses and settles on the soil surface. To do. Since this restraint plate 4 is configured to cause the restraint plate 4A on the stock side to have a large opening rotation angle to the rear side of the restraint plate 4B on the tip side, mainly the head portion cutting straw having a light weight is used. The guide plate side guide plate 4B to be guided is easily opened and rotated, and the cut straw is smoothly diffused toward the tip side.

  The setting of the stock-side restraint plate 4A and the tip-side restraint plate 4B is performed according to the material, shape, weight, suspension form, or the like of the restraint plate 4. When the material is changed, for example, the restraint plate 4A on the stock side is made of sheet metal, whereas the restraint plate 4B on the tip side is made of a synthetic resin plate, and an opening rotation difference is given. Further, when changing the shape of the restraining plate 4, for example, the restraining plate 4A on the stock side is made rigid, whereas the restraining plate 4B on the tip side is flexible, curved or easily flexible. It is possible to set the shape, to shorten the hanging length of the tip side restraining plate 4B, or to set the lateral width to be short. Moreover, the weight of the restraint plate 4B on the tip side with respect to the restraint plate 4A on the stock side can be reduced, or the plate thickness can be set thin. Furthermore, in the suspension form, a return spring having a different resilience is provided for the opening rotation of the restraining plates 4A and 4B, and the returning spring force of the restraining plate 4B on the tip side is weakened to perform the opening rotation. Can be made easier.

  According to the first aspect of the present invention, the cut straw diffused and released by the rotation of the diffusion rotor 2 is prevented from scattering to the rear upper portion by the restraining plates 4A and 4B at the rear lower end of the guide cover 3. At this time, the stock-side restraint plate 4A and the tip-side restraint plate 4B can be independently opened and rotated, and when the diffused and released wind force toward the tip-side region is strong, or when the diffused and released straw is strong In such a case, the suppression plate 4B on the tip side suppresses the cutting straw on the side of the cutting straw side by assuming that the suppression plate 4B is easily opened and rotated regardless of the rotation state of the suppression plate 4A on the stock side. Release can be performed smoothly.

  The invention according to claim 2 is a configuration in which opening rotation is easily performed by changing the material, shape, weight, suspension form, or the like of the tip side restraint plate 4B with respect to the strainer side restraint plate 4A. Therefore, the configuration can be simplified and simplified, and the diffusion and discharge of the strained portion of the straw to the tip of the straw can be performed accurately and smoothly. It can be performed.

The rear view of a waste cutter. The side view. The rear view of a cutter case part. The rear view and side view of a spreading | diffusion rotor part. The top view of a combine.

  Based on the drawings, the slaughtering cutter 5 is mounted on the rear side of the combine threshing device 6, and the cereals are conveyed backward by the feed chain 9 provided along the cereal conveying port 8 of the threshing chamber 7. However, the threshing waste subjected to the threshing action is inherited by the rejection device 10 and conveyed toward the rear tip side, and supplied to the rejection cutter 5 attached to the lower rear end of the rejection device 10. Cut shortly. The waste cutter 5 is mounted with a cutter shaft 1 in which a large number of cutter disks 11 are arranged along the axial direction at regular intervals in a lateral direction along the waste discharged from the waste device 10. On the upper side of the rejecting cutter 5, it is turned up and down around the switching shaft 40 so that the reject is supplied to the cutting part 12 of the rejecting cutter 5, or dropped backward on the rejecting cutter 5. A switching plate 13 for switching and guiding is provided so as to guide. The combine has a pair of left and right crawlers 14 and is driven to travel. The combine harvests the cereals harvested by the front reaping device 15 to the transport device 16 and feeds and feeds it to the feed chain 9. On the right side of the threshing device 6, a driver's seat 17, an engine room 18, a harvesting tank 19 and the like are arranged.

  The waste cutter 5 includes a cutter case 20 that is elongated in the horizontal slimming direction and has a box shape, and a diffusion case 21 on the lower side, and a support arm 22 at the tip end of the cutter case 20. Is fitted to a support bracket at the rear end of the threshing device 6, and the stocker side portion of the cutter case 20 is rotated closer to the rear end surface of the front threshing device 6, thereby hooking the cutter case 20. It is set as the structure which can be attached or detached by engaging 23 with the engaging pin 24 by the side of the threshing apparatus 6. FIG. In the cutter case 20, the cutter shaft 1 and a scraping shaft 25 that rotates in the opposite direction facing the front upper portion of the cutter shaft 1 are mounted in the lateral direction so as to be opposite to each other. Rotation of the cutter disk 11 around the cutter shaft 1 and the scraping disk 26 around the scraping shaft 25 is set as a cutting portion 12 to supply waste along the upper side of the cutting portion 12. By doing this, the waste that is long in the horizontal direction is cut short at every arrangement interval of each cutter disk 11.

  Below the cutter shaft 1, a diffusion shaft 27 is pivotally supported at the rear lower end portion of the diffusion case 21, and is rotationally driven from the input shaft 28 via a belt 29 and a tension clutch 30. A round bar-shaped scraping lug 31 formed in a U-shape is disposed around the diffusion shaft 27 over a substantially half width region on the stock side, and the straw is cut by rotation over a substantially half width region on the tip side. A diffusion spiral 32 that transfers the diffusion spiral toward the tip side, and a scraping plate 34 that is inclined in the same direction as the spiral of the diffusion spiral 32 and protrudes larger than the rotational diameter of the diffusion spiral 32 is disposed. 2 is configured. Due to the rotation of the diffusion rotor 2, the cutting straw cut off from the upper cutting part 12 is ejected to the rear. Of these, in the half width region of the tip side, the diffusion helix 32 and the scraping plate 34 are rotated to receive a transfer force in the tip side direction and strongly receive the diffusion action toward the tip side.

  A configuration in which the front end portion of the guide cover 3 is provided on the rear side of the diffusion rotor 2 so as to be rotatable up and down around the cover shaft 35 along the horizontal direction, and the vertical inclination angle of the guide cover 3 can be changed or adjusted. I have to. On the lower surface of the guide cover 3, a guide plate 36 having an appropriate height is inclined from the stock side to the tip side and arranged at appropriate intervals in the left-right width direction. It is possible to guide the cutting straw discharged to the guide plate 36 to diffuse and guide it toward the tip side region. At this time, the cutting straw released from the stock side is released immediately after by the raking lug 31, but due to the large weight of this cutting straw, the guide force by the guide plate 36 of the guide cover 3 is strongly received, The diffusion action toward the tip side can be effectively performed. 37 is a bottom guide plate, which is located at the bottom of the diffusion case 21 and receives the scraping lugs 31 around the diffusion shaft 27 and scrapes so as to guide the fall of the cut straw to the rear exit 38 side. It is formed along the rotating lower peripheral surface of the exit spiral 32, the scraping plate 34, and the like.

  The restraining plate 4 is provided with a diffusion rotor 2 that receives the cutting straw and diffuses and discharges it to a region closer to the tip side under the cutter shaft 1 that receives and cuts the threshing waste, and a diffusion releasing part on the rear side. A covering guide cover 3 is provided, and a plurality of restraining plates 4A and 4B that are independently pivotable back and forth are suspended at the rear lower end of the guide cover 3 so as to face the stock side and the tip side. It is set as the structure of the cutting discharge apparatus of the waste cutter characterized by the above-mentioned. When the waste discharged from the threshing device is supplied to the cutting unit 12, the cutter shaft 1 is cut short by a rotating cutter disk and dropped. Below this cutting part, the diffusion rotor 2 rotates, receives the cutting straw that is cut and dropped, guides it to the guide cover 3, diffuses and discharges it toward the tip side and discharges it to the uniform layer. At this time, the cutting straw released from the lower end portion of the guide cover 3 to the rear is suppressed by the restraining plates 4A and 4B suspended from the lower end portion of the guide cover 3, and the flying to the upper rear portion of the guide cover 3 is suppressed. Prevent outage. In addition, since the stock-side restraint plate 4A and the tip-side restraint plate 4B are independently pivotable and swingable, the stock-side restraint plate 4A is not restricted by the open rotational state of the stock-source side restraint plate 4A. This makes it easy to perform the opening rotation of the suppression plate 4B, and to smoothly perform the diffusion and discharge to the tip side region.

  Also, the material, shape, weight, or suspension form of the tip side restraining plate 4B with respect to the strainer side restraining plate 4A is made different to increase the opening rotation angle of the tip side restraining plate 4B, or It is set to facilitate opening and turning. As described above, the waste supplied along the direction of the cutter shaft 1 is cut short and dropped, and is diffused and discharged widely by the rotation of the diffusion rotor 2 to be guided to the guide cover 3 and discharged. At this time, the cutting straw that is about to be discharged rearward from the lower end portion of the guide cover 3 receives blocking resistance by the restraining plates 4A and 4B, is prevented from scattering to the upper rear portion, and quickly diffuses and settles on the soil surface. To do. Since this restraint plate 4 is configured to cause the restraint plate 4A on the stock side to have a large opening rotation angle to the rear side of the restraint plate 4B on the tip side, mainly the head portion cutting straw having a light weight is used. The guide plate side guide plate 4B to be guided is easily opened and rotated, and the cut straw is smoothly diffused toward the tip side.

  The illustrated restraint plate 4 is configured in a two-part form of a stock-side restraint plate 4A and a tip-side restraint plate 4B, but this may be configured in three parts or four parts. Is possible. Further, the opening rotation angle of each suppression plate 4 or the load (resistance) of the opening rotation is set to be different for each suppression plate 4A, 4B. Or, for example, a plurality of suppression plates 4A arranged on the stock side and a plurality of suppression plates 4B arranged on the tip side can be set to different opening rotation angles for every several sheets. It is. Each of the restraining plates 4A and 4B may be formed of a rubber plate material having an appropriate thickness, and the upper end portion may be superposed on the upper surface of the rear end of the guide cover 3 and fixed. The hanging length of the suspension is set at a position substantially the same as the lower end edge of the guide plate 36 disposed on the lower surface of the guide cover 3.

  The cutting straw cut off from the cutting part 12 by the rotation of the cutter shaft 1 is a scraping lug 31 of the diffusion shaft 27 rotating along the upper surface of the bottom guide plate 37, a diffusion spiral 32, a scraping plate 34, etc. By this, it is discharged from the rear scrape 38 to the lower side of the guide cover 3. At this time, the heavy cut straw on the stock side is guided by the inclined surface of the guide plate 36 on the lower surface of the guide cover 3 while being released by the raking lug 31, and is diffused to the tip side area soil surface. The Further, the lightly cut straw on the tip side is discharged to the lower side of the guide cover 3 while being sent closer to the tip side by the lateral feeding action of the scraping plate 34, the diffusion spiral 32 or the like, and further the guide plate on the lower surface of the guide cover 3 36 is diffused and discharged in response to the discharge guide action in the direction of the tip by 36.

  As described above, the cutting straw diffused and discharged widely on the traveling soil surface by the rotation of the diffusion shaft 27 and the guide by the guide plate 36 is caused by the left and right restraining plates 4A and 4B suspended from the rear end portion of the guide cover 3. Stopped and guided to the traveling soil surface. At this time, the cutting straw on the stock side has a large weight and is scraped backward by the scraping lug 31 and is strongly discharged from between the guide plates 36 to the back restraining plate 4A. Since the restraining plate 4A that receives the release of the slag is set to have a large restraining force, the opening rotation is small even if the release force of the cutting straw is received. Straw splash can be reduced. Further, the cutting straw on the tip side is scraped backward by the rotation of the scraping plate 34 and the like, but is stopped by the restraining plate 4B on the rear side and dropped onto the traveling soil surface. Although the cutting straw on the tip side is relatively light and the output to the rear is small, the opening rotation resistance of the suppression plate 4B that receives the release of the cutting tip side cutting straw is set to be small. Opening rotation can be performed. For this reason, not only the cutting straw of the tip part but also the cutting straw of the stock part can be smoothly diffused in the direction of the tip side, and a wide and uniform cut straw can be diffused and discharged. Therefore, it is possible to prevent the straw from being scattered from the lower end portions of the respective restraining plates 4A and 4B to the upper portion on the rear side and perform a safe operation.

DESCRIPTION OF SYMBOLS 1 Cutter axis | shaft 2 Diffusion rotor 3 Guide cover 4 Inhibition board 4A Stock side side restraint plate 4B Tip side restraint board

Claims (2)

  Under the cutter shaft (1) that receives and cuts the threshing waste, the diffusion rotor (2) that receives the cutting straw and diffuses and discharges it toward the tip end side, and the guide that covers the diffusion releasing part on the rear side A cover (3) is provided, and a plurality of restraining plates (4A), (4A), A cutting / discharging device for a waste cutter, wherein 4B) is suspended.   The material, shape, weight, or suspension form of the tip side restraint plate (4B) with respect to the stock side restraint plate (4A), and the opening rotation angle of the tip side restraint plate (4B) The cutting / discharging device for a waste cutter according to claim 1, wherein the cutting / discharging device is set to be large or to facilitate opening rotation.

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