JP4632440B2 - Combine - Google Patents

Description

  The present invention relates to a combine that threshs a harvested cereal meal and selects and collects fine grains from the cereal.

Conventionally, a threshing device having a handling cylinder for threshing cereal straw held and conveyed by a feed chain, and a swing sorting mechanism and a wind sorting mechanism disposed below the handling cylinder are included in the traveling machine of the combine. It is installed. On one side of the threshing device, a threshing cylinder with a built-in cereal conveyor for transporting the first thing (grains after threshing) and a second thing (grains with branches, cuttings, etc.) And a reduction cylinder having a reduction conveyor built therein. The end portion of the reducing cylinder and one side portion of the threshing device can be rotated about an axis extending in a direction intersecting with the conveying direction of the threshing by the swing sorting mechanism in a plan view. A second processing case with a built-in second processing cylinder is communicated. The sawdust after threshing is discharged out of the machine from a discharge port provided at the rear of the threshing device by a sorting wind from a wind sorting mechanism or the like (see, for example, Patent Document 1).
JP 2003-92919 A

  By the way, in recent years, not only a request for improving the sorting performance of a threshing apparatus, but also a request for downsizing of the threshing apparatus and thus the combine is increasing. For example, in the combine described in Patent Literature 1, the first and second processing cylinders of the dust feeding port are eliminated, and the length of the threshing device (the length along the conveying direction) is shortened. Can be mentioned.

  However, simply adopting the above configuration shortens the longitudinal distance between the discharge port located in the threshing device and the discharge port of the threshing device in the second processing case. The threshed refined grains are easily discharged out of the machine together with the sawdust due to the influence of the wind formed by the rotation of the second processing cylinder and the sorting wind from the wind sorting mechanism. If it does so, it will be thought that the selection loss of the second thing threw again increases.

  Then, this invention makes it a technical subject to provide the combine which reduced the selection loss of the second thing re-threshed even if it reduced in size.

In order to achieve this technical problem, the invention of claim 1 is directed to a handling cylinder for threshing cereal straw held and conveyed by a feed chain on a traveling machine body, and a swing sorting mechanism disposed below the handling cylinder. And a threshing device having a wind sorting mechanism, on one side of the threshing device is provided with a reduction cylinder incorporating a reduction conveyor for transporting a second object, and an end portion of the reduction cylinder And a portion of one side of the threshing device that is rotatable about an axis extending in a direction intersecting with the conveying direction of the threshing by the swing sorting mechanism in a plan view. A combine that communicates via a second processing case with a built-in barrel, wherein a blocking plate is disposed at least on the outer side of the discharge port located in the threshing device in the second processing case. Below the grain removal direction by the sorting mechanism In combined provided so as to cover the side, the shield plate is formed into a form obliquely downward facing conveying direction upstream side of the threshing material by the oscillating sorting mechanism in a side view is curved so as to concave, was added In the threshing apparatus, an inner portion of one side wall of the threshing apparatus is provided with a bowl-shaped member protruding obliquely downward toward the inside of the threshing apparatus at an upper portion of the second processing case. A side end portion in the threshing apparatus in the second processing case is configured to be covered with the bowl-shaped member .

  In the present invention, the axis extending from the terminal portion of the reducing cylinder and the upper portion of the threshing device on one side of the threshing device in a direction intersecting with the conveying direction of the threshing by the swing sorting mechanism in a plan view. Since the second processing cylinder which can rotate around is communicated via a second processing case, the second thing fed into the second processing case from the terminal end of the reducing cylinder is the second processing case. After threshing again by rotation of the number processing cylinder, it is discharged from the discharge port of the second processing case into the threshing apparatus.

According to the first aspect of the present invention, the threshing has a handling cylinder for threshing the cereal culm sandwiched and conveyed by the feed chain, and an oscillating sorting mechanism and a wind sorting mechanism disposed below the handling cylinder. While a device is provided, a reduction cylinder incorporating a reduction conveyor for transporting a second object is provided on one side of the threshing device, and a terminal portion of the reduction threshing and one side of the threshing device A second processing cylinder having a built-in second processing cylinder capable of rotating around an axis extending in a direction intersecting a plan view of the threshing conveyance direction by the swing sorting mechanism. A combine that communicates with a case, wherein a blocking plate is provided at least on the outer peripheral side of the discharge port located in the threshing device in the second processing case, and the conveying direction of threshing by at least the swing sorting mechanism provided so as to cover the downstream In the combine, the blocking plate is formed in a curved shape such that the oblique lower side facing the upstream side in the conveying direction of the threshing by the swing sorting mechanism in a side view is concave, and in addition, one side wall in the threshing device The upper part of the inner surface of the second processing case is provided with a bowl-shaped member that projects obliquely downward toward the threshing device, and the threshing device in the second processing case in plan view. The inner side end is covered with the bowl-shaped member .

  As a result, most of the second thing rethreshed in the second processing case falls smoothly onto the swing sorting mechanism and is re-sorted by the swing sorting mechanism and the wind sorting mechanism. be able to. Therefore, even when the threshing apparatus and the combine are downsized, the sorting function of the swing sorting mechanism and the wind sorting mechanism for the second thing after the threshing is effectively exhibited, and after the threshing together with the sawdust This has the effect of reducing the sorting loss of discharging the granules outside the machine.

Further, when the second thing after threshing is discharged from the second processing case into the threshing apparatus, the second thing is randomly scattered around the discharge port by the rotation of the second processing cylinder. Without any problem, it can be smoothly guided (dropped) along the blocking plate to the upstream side in the transport direction of the swing sorting mechanism.

  Therefore, the distance that the second thing after rethreshing moves on the swing sorting mechanism is sufficiently secured, and the sorting performance of the swing sorting mechanism and the wind sorting mechanism is improved.

Moreover, the operation | work which attaches the said 2nd processing case with the said shielding board to the said threshing apparatus is very easy. In addition, since the second processing case and the blocking plate are attached to the threshing device at a time, compared to the case where the blocking plate is configured separately from the second processing case, the labor for mounting work is reduced. There is an effect that it can be reduced.

  DESCRIPTION OF EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings (FIGS. 1 to 9). 1 is a left side view of the combine, FIG. 2 is a plan view of the combine, FIG. 3 is a front view of the combine, FIG. 4 is a side sectional view of the threshing device, FIG. 5 is a skeleton diagram showing a power transmission system of the combine, FIG. Is a front sectional view of the threshing device, FIG. 7 is a plan sectional view near the right side of the threshing device, FIG. 8 is a perspective view showing the arrangement of the second processing case with respect to the threshing device, and FIG. It is a perspective view which shows the arrangement | positioning relationship. In the following description, the left side in the traveling direction of the traveling machine body 1 is simply referred to as the left side, and the right side in the traveling direction is also simply referred to as the right side.

  First, the overall structure of the combine will be described with reference to FIGS.

  The combine according to the present embodiment includes a traveling machine body 1 supported by a pair of left and right traveling crawlers 2 and 2. At the front part of the traveling machine body 1, a pre-cutting processing device 3 that takes in while harvesting cereals is mounted by a single-acting hydraulic cylinder 4 so as to be adjustable up and down. A threshing device 5 with a feed chain 6 and a grain tank 7 for storing grain after threshing are mounted on the traveling machine body 1 side by side. In this embodiment, the threshing device 5 is disposed on the left side in the traveling direction of the traveling machine body 1, and the grain tank 7 is disposed on the right side in the traveling direction of the traveling machine body 1. The grain tank 7 is configured to be horizontally rotatable around a vertical axis (in the embodiment, a vertical auger tube 9 of a discharge auger 8 to be described later, see FIGS. 1 and 2) provided at the rear portion of the traveling machine body 1. . Between the pre-harvest processing device 3 and the grain tank 7, a driving unit 10 having a steering lever, a driving seat, and the like is provided. An engine 11 as a power source is disposed below the operation unit 10.

  The pre-cutting processing device 3 is provided with a clipper-type cutting blade device 12 below the lower frame. In front of the lower frame, there are arranged three grain culling pulling devices 13. Between the culm pulling device 13 and the front end of the feed chain 6, the culm conveying device 14 is arranged. A weeding body 15 is projected in front of the lower part of the grain raising device 13.

  The threshing device 5 includes a handling cylinder 17 for threshing and threshing arranged in the handling chamber 16, and a swing sorting mechanism 18 and a wind sorting mechanism 19 arranged below the handling chamber 16. A rotating shaft 20 (see FIGS. 4 to 6) of the handling cylinder 16 extends along the conveying direction of the cereal by the feed chain 6 (in other words, the traveling direction of the traveling machine body 1). In the lower part of the threshing device 5, the first receiving bowl 21 in which the most refined grains, etc., of the grains selected by the both sorting mechanisms 18, 19 are collected, and the grains with the branch stems, the eared grains, etc. There is provided a second receiving bowl 22 where second things gather. The two receiving rods 21 and 22 of the present embodiment are horizontally provided above the rear portions of the traveling crawlers 2 and 2 in a side view in order of the first receiving rod 21 and the second receiving rod 22 from the front side in the traveling direction of the traveling machine body 1. ing.

  The root part of the cereals conveyed from the pre-harvest processing device 3 is inherited by the feed chain 6 and is nipped and conveyed. Then, the tip part of the cereal is threshed by the handling cylinder 17 in the handling chamber 16.

  The swing sorting mechanism 18 is for performing peristaltic sorting of cereals by a handling net 23 stretched below the handling cylinder 17, a pair of front and rear feed pans 24, 25, a chaff sheave 26, and the like. The wind sorting mechanism 19 is for performing wind sorting of cereals by the tang fan 27 provided below the feed pans 24 and 25 group.

  The threshing that has been threshed by the handling cylinder 17 and leaked from the handling net 23 falls onto the pair of front and rear feed pans 24, 25 that swing back and forth below the handling net 23, and is subjected to sorting while being moved backward. It is sent to the chaff sheave 26. At this time, the threshing on the feed pans 24 and 25 and the chaff sheave 26 is subjected to a sorting wind flowing backward from the Kara fan 27. Due to the interaction between the swing sorting and the wind sorting, the threshing is separated into grains and swarf.

  Of the cereal grains, the most refined ones pass through the Glen sheave 28 provided below the chaff sheave 26 and are collected in the most receiving bowl 21 while being guided by the cereal board. A second item such as a grain with a branch stem cannot be passed through the Glen sieve 28 and is collected in a second receiving rod 22 behind the first receiving rod 21. The sawdust is sucked into a suction fan 29 disposed at the rear part of the threshing device 5 and then discharged from the discharge port 30 provided at the rear part of the threshing device 5 to the outside of the machine.

  The first conveyor bowl 21 is internally provided with a first conveyor 31 that conveys the first article in the lateral direction along the first receptacle 21. A second conveyor 32 that conveys the second item in the horizontal direction along the second receiving rod 22 is internally provided.

  A cerealing cylinder 33 extending in the vertical direction is connected to a terminal portion that protrudes outward from one side wall 5a (right side wall in the embodiment) of the threshing device 5 near the grain tank 7 in the first receiving bowl 21. ing. Of the second receiving trough 22, the end portion protruding outward from one side wall 5 a near the grain tank 7 in the threshing device 5 is connected to the milling cylinder 33 via an annular mounting seat 76 (see FIG. 7). A reduction cylinder 34 that crosses and extends in the front-rear direction is connected in communication. Therefore, the whipping cylinder 33 and the reduction cylinder 34 are located between the threshing device 5 and the grain tank 7.

  In the present embodiment, the milling cylinder 33 is arranged on the side close to the one side wall 5a of the threshing device 5 so that the milling cylinder 33 and the reduction cylinder 34 do not interfere with each other, and the side near the grain tank 7 (threshing apparatus 5 on the side far from the one side wall 5a) (see FIGS. 6, 7 and 9).

  In the whipping cylinder 33, a whipping conveyor 35 is provided for carrying the first item toward the grain tank 7. In the reduction cylinder 34, a reduction conveyor 36 for carrying the second item toward the swing sorting mechanism 18 is provided.

  The end portion (upper end portion) of the whipping cylinder 33 is one side of the grain tank 7 near the threshing device 5 when the grain tank 7 is in a working posture in which the grain tank 7 is horizontally rotated so as to be close to the threshing device 5. It is comprised so that it may communicate with the receiving port (not shown) formed in (left side part in embodiment).

  The upper end portion of the first feed pan 24 in the end portion (front end portion) of the reducing cylinder 34 and the one side wall 5a (right side wall in the embodiment) of the threshing device 5 is the second processing cylinder for threshing the second thing again. 81 is communicated via a second processing case 80 having a built-in function.

  The first thing collected in the first receiving bowl 21 is accumulated in the grain tank 7 via the first conveyor 31 and the cereal conveyor 35. The first item in the grain tank 7 is carried out of the machine (for example, a truck bed) via the discharge auger 8. The second product collected in the second receiving bowl 22 is returned to the first feed pan 24 in the threshing device 5 through the second conveyor 32, the reduction conveyor 36, and the second processing cylinder 81, and re-sorted. .

  In addition, the waste handed over to the waste chain 37 from the rear end of the feed chain 6 is discharged to the rear of the traveling machine body 1 in a long state, or is appropriately lengthened by the waste cutter 38 (see FIG. 5). After being cut short, it is discharged to the rear of the traveling machine body 1.

  Next, the power transmission system of the combine will be described with reference to FIG.

  The engine 11 is driven by an output shaft 41 projecting from the engine 11 to drive the left and right traveling crawlers 2, 2, a traveling mission device 42, a threshing device 5, a cutting pretreatment device 3, and a discharge auger 8. Divided in one direction and transmitted.

  The traveling mission device 42 includes a traveling HST transmission mechanism 43 that includes a hydraulic pump and a hydraulic motor, and a turning HST transmission mechanism 44 that also includes a hydraulic pump and a hydraulic motor. The branching power from the output shaft 41 of the engine 11 toward the traveling mission device 42 is transmitted to the traveling pump shaft 45 of the traveling HST transmission mechanism 43, and the turning of the turning HST transmission mechanism 44 from the traveling pump shaft 45. Power is transmitted to the pump shaft 46.

  In both the traveling and turning HST transmission mechanisms 43 and 44, the pressure oil is appropriately sent from the hydraulic pump to the hydraulic motor by the power transmitted to the pump shafts 45 and 46. Then, by adjusting the inclination angle of the rotary swash plate in the hydraulic pump according to the operation amount of the steering lever provided in the operation unit 10, the discharge direction and the discharge amount of the pressure oil to the hydraulic motor are changed, and the traveling The rotation direction and the number of rotations of the motor shaft for turning or turning (not shown) and the driving speed and driving direction of the left and right traveling crawlers 2 and 2 are arbitrarily adjusted.

  The branching power from the output shaft 41 of the engine 11 to the discharge auger 8 is transmitted to the bottom conveyor 48 in the grain tank 7 and the vertical conveyor 49 in the vertical auger cylinder 9 in the discharge auger 8 via the tank input shaft 47. Then, power is transmitted to the discharge conveyor 51 in the horizontal auger cylinder of the discharge auger 8 via the connection screw 50.

  The branching power from the output shaft 41 of the engine 11 to the threshing device 5 and the pre-cutting processing device 3 is transmitted to the tang shaft 53 of the tang fan 57 via the threshing clutch 52, and branches from the tang shaft 53 in two directions. Power is transmitted.

  One of the power from the tang shaft 53 is transmitted to the first conveyor 31 and the cereal conveyor 35, the second conveyor 32 and the reduction conveyor 36, the suction shaft 54 of the suction fan 29, and the waste cutter 38.

  The other power from the tang shaft 53 is transmitted via the handling cylinder input shaft 55 by branching in three further directions: the pre-cutting processing device 3, the handling cylinder 17, and the second processing cylinder 81.

  The branching power from the handling cylinder input shaft 55 to the cutting pretreatment device 3 is once transmitted to the cutting transmission mechanism 56, and part of it is transmitted to the front end of the feed chain 6 through the swinging shaft 57 and the feed chain shaft 58. The The remaining branching power is transmitted from the cutting shaft 59 to the cutting input shaft 61 via the cutting clutch 60, and is transmitted from the cutting input shaft 61 to each part of the cutting pretreatment device 3.

  In the present embodiment, the power transmitted to the cutting input shaft 61 is transmitted to the lateral transmission shaft 63 via the longitudinal transmission shaft 62, and then, from the lateral transmission shaft 63, the three pulling transmission shafts 64 and the cutting blade drive shaft. Power is transmitted to 65. The power transmitted to each pulling transmission shaft 64 drives each pulling tine (not shown) of the culm pulling device 13 through the pulling sprocket shaft 66 and the pulling sprocket 67 fixed thereto. The power transmitted to the cutting blade drive shaft 65 drives the cutting blade device 12.

  The power is branched and transmitted from the left and right pulling transmission shafts 64 to the lower conveyance driving shaft 68 disposed between the adjacent pulling transmission shafts 64 and 64. The power transmitted to the lower left conveying drive shaft 68 is transmitted to the lower left conveying chain 70 of the cereal conveying device 14, the left star wheel 71 in the cereal whipping device 13, and the left driving sprocket 69 fixed thereto. The scraping belt 72 is driven. The power transmitted to the lower right transport drive shaft 68 is transmitted to the right lower and center star of the cereal haul raising device 13 through the lower right transport chain 70 of the cereal haul transport device 14 via the right drive sprocket 69 fixed thereto. The wheel 71 and the scraping belt 72 are driven.

  The power transmitted to the cutting input shaft 61 also branches to the vertical conveying chain, the upper conveying tine (both not shown), and the tip conveying tine 74 of the cereal conveying device 14 via the vertical axis 73. Is transmitted.

  On the other hand, branching power from the handling cylinder input shaft 55 toward the handling cylinder 17 is transmitted to the rotating shaft 20 of the handling cylinder 17 and the waste chain 37. The branching power from the handling cylinder input shaft 55 toward the second processing cylinder 81 is transmitted from the processing cylinder input shaft 75 to the rotating shaft 82 of the second processing cylinder 81 by transmission of a belt 77 and a pulley 78 (FIGS. 5 and 7). And FIG. 9).

  Next, a connection structure between the threshing apparatus and the second processing case will be described with reference to FIGS.

  The second processing case 80 for connecting the terminal portion of the reducing cylinder 34 and the upper portion of the first feed pan 24 in the one side wall 5a of the threshing device 5 is a horizontally long cylinder. As shown in FIGS. 6 and 7, the second processing case 80 is fitted into a fitting hole 85 formed at a location above the first feed pan 24 in the one side wall 5 a near the grain tank 7 in the threshing device 5. And is arranged so as to straddle the inside and outside of the threshing device 5. In this case, the axis 80a of the second processing case 80 extends in a direction (lateral direction) that intersects the conveying direction W of the threshing by the first feed pan 24 in a plan view (see FIG. 7).

  A side end portion of the second processing case 80 located outside the threshing device 5 is closed with a lid plate 84. In addition, an inlet (not shown) that opens upward is formed on the outer peripheral upper portion of the second processing case 80 outside the threshing device 5. The terminal portion of the reduction cylinder 34 is connected to the insertion port. With this configuration, the second item conveyed to the end of the reduction cylinder 34 by the reduction conveyor 36 falls smoothly into the second processing case 80.

  A discharge port 89 that opens in a direction (lateral direction) that intersects the conveying direction W of the threshing by the first feed pan 24 in a plan view at the side end located inside the threshing device 5 in the second processing case 80. It has. A blocking plate 90 that covers at least the downstream side in the conveying direction W of threshing by the first feed pan 24 is provided on the outer peripheral side from the discharge port 89. This blocking plate 90 is affected by the wind formed by the rotation of the second processing cylinder 81, and the second thing after rethreshing is downstream from the discharge port 89 of the second processing case 80 in the transport direction W. It is intended to block the flow.

  In the present embodiment, the blocking plate 90 extends from a side end in the threshing device 5 in the second processing case 80 in a direction (lateral direction) intersecting the transport direction W in plan view. That is, the blocking plate 90 is integrally connected to the side end portion (the peripheral portion of the discharge port 89) on the discharge port 89 side in the second processing case 80.

  Further, when the blocking plate 90 is viewed from the threshing device 5, the blocking plate 90 is curved obliquely downward toward the upstream side in the transport direction W in the first feed pan 24. In particular, the side view shape of the blocking plate 90 in the present embodiment is formed in a C shape so as to substantially surround the outer periphery of the discharge port 89 (see FIGS. 6 to 8). In other words, the side view shape of the blocking plate 90 is an arc shape along the rotation direction R (details will be described later) of the second processing cylinder 81. A notch 91 for allowing the inside of the second processing case 80 to face the front surface of the first feed pan 24 is provided between the circumferential edges of the blocking plate 90 in the first feed pan 24. It opens obliquely downward toward the upstream side (front side) in the direction W. The blocking plate 90 of the present embodiment surrounds a range of about 270 ° excluding the notch 91 in the outer periphery of the discharge port 89 in a side view.

  Furthermore, in this embodiment, the side end part (the side where the blocking plate 90 is extended) on the discharge port 89 side in the second processing case 80 is against the fitting hole 85 formed in the one side wall 5a of the threshing device 5. It is fitted from the outside. The second processing case 80 is detachably fastened to the threshing device 5. In this case, the flange 86 formed on the outer peripheral surface of the second processing case 80 is brought into contact with one side wall 5a of the threshing device 5, and threshing is performed from the outer surface side of the flange 86 (the end surface side opposite to the threshing device 5). A mounting bolt 87 is screwed toward one side wall 5a of the device 5.

  Inside the second processing case 80, a second processing cylinder 81 for rethreshing the second item is provided. The second processing cylinder 81 includes a rotation shaft 82 that extends in a direction intersecting the conveyance direction W of threshing by the first feed pan 24 (direction intersecting the rotation axis 20 of the handling cylinder 17). The second processing cylinder 81 is configured to be rotatable around its rotation shaft 82. The rotation direction R of the second processing cylinder 81 is set to be counterclockwise in FIG. On the outer peripheral surface of the second processing cylinder 81, a large number of rotating teeth 83 project outward in the radial direction. On the inner peripheral surface of the second processing case 80, a plurality of tooth bars 88 (see FIG. 7) have a radius. It protrudes inward. The rotation tooth 83 and the tooth bar 88 are set so as to have a positional relationship that does not interfere with each other when the second processing cylinder 81 is rotated around the rotation shaft 82.

  In the present embodiment, one end portion of the rotation shaft 82 in the second processing cylinder 81 is pivotally supported with respect to the lid plate 84. A pulley 78 for power transmission is fixed to a portion of the rotating shaft 82 that protrudes outward from the cover plate 84. The other end of the rotating shaft 82 is rotatably supported with respect to a support arm 93 fixed to the inner peripheral side of the blocking plate 90 by bolting. That is, the rotation shaft 82 of the second processing cylinder 81 is stably supported in a state where it is bridged between the lid plate 84 and the support arm 93 in a doubly supported beam shape.

  Further, as described above, the threshing device 5 in the second processing case 80 is configured such that the other end portion of the rotation shaft 82 is rotatably supported with respect to the support arm 93 fixed to the inner peripheral side of the blocking plate 90. The length of the rotation shaft 82 of the second processing cylinder 81 and the length of the second processing case 80 as a whole in the direction of the axis 80a can be increased by the length of the shielding plate 90 extending from the inner side end. it can. Thereby, the improvement of the re-threshing function of the 2nd thing by the 2nd processing cylinder 81 can be aimed at.

  In the threshing device 5, a hook-like member 92 that protrudes obliquely downward toward the inside of the threshing device 5 is provided at an upper portion of the second processing case 80 in the inner surface of the one side wall 5 a. The bowl-shaped member 92 covers and hides almost the entire side end portion (including the blocking plate 90) in the threshing device 5 in the second processing case 80 in plan view. Due to the presence of the bowl-shaped member 92, threshing and dust are prevented from accumulating on the protruding portion of the second processing case 80 into the threshing device 5. Since the bowl-shaped member 92 itself is inclined obliquely downward toward the inside of the threshing device 5, most of the cereal grains and dust trying to be placed on the inclined surface of the bowl-shaped member 92 slide down on the first feed pan 24. It will be.

  In addition, the bowl-shaped member 92 of the present embodiment is inclined obliquely downward toward the inside of the threshing device 5 and is inclined obliquely downward and backward. By such inclination, the cereals flying toward the bowl-shaped member 92 are dropped toward the rear part of the first feed pan 24, and the cereals falling on the first feed pan 24 are dispersed.

  In the above configuration, the second object fed into the second processing case 80 from the end portion of the reducing cylinder 34 is rotated by the rotation of the second processing cylinder 81 and the second processing case 81 of the second processing cylinder 81. After being rethreshed with the tooth bar 88 in 80, it is discharged from the discharge port 89 of the second processing case 80 into the threshing apparatus 5.

  In this case, a blocking plate 90 that covers at least the downstream side in the conveyance direction W of the threshing by the first feed pan 24 is provided on the outer peripheral side of the discharge port 89 located in the threshing device 5 in the second processing case 80. Therefore, the second thing (fine grains and sawdust) re-threshed in the second processing case 80 is affected by the wind formed by the rotation of the second processing cylinder 81, the sorting wind by the wind sorting mechanism 19, and the like. Even if an attempt is made to move downstream from the discharge port 89 of the second processing case 80 in the second feed direction W by the first feed pan 24, the movement is blocked by the presence of the blocking plate 90, and the first feed pan It will fall on 24.

  Moreover, since the blocking plate 90 of the present embodiment extends from the side end in the threshing device 5 in the second processing case 80 in a direction intersecting the transport direction W in plan view, the second thing after rethreshing. Can be fed (guided) to a position close to the center of the first feed pan 24.

  Thereby, most of the second thing rethreshed in the second processing case 80 smoothly falls on the surface near the center of the first feed pan 24, and is swung by the swing sorting mechanism 18 and the wind sorting mechanism 19. Can be rescreened. Therefore, even when the threshing device 5 and the combine are downsized, the sorting function of the swing sorting mechanism 18 and the wind sorting mechanism 19 with respect to the second thing after the threshing is effectively exhibited, and after the threshing together with the sawdust. This can reduce the sorting loss of discharging the fine particles outside the machine.

  Further, since the blocking plate 90 is curved obliquely downward toward the upstream side in the transport direction W of the first feed pan 24, the second thing after rethreshing is discharged from the second processing case 80. In addition, the second object is smoothly guided to the upstream side in the transport direction W of the first feed pan 24 along the arcuate inner surface of the blocking plate 90 without being randomly scattered around the discharge port 89. (Drop).

  In particular, the blocking plate 90 of the present embodiment is formed in a C shape in a side view surrounding the range of about 270 ° excluding the notch 91 on the outer periphery of the discharge port 89, so the first feed by the blocking plate 90 is performed. The second item guide function to the bread 24 is extremely excellent.

  Therefore, the distance that the second thing after rethreshing moves on the first feed pan 24 is sufficiently secured, and the sorting performance of the swing sorting mechanism 18 and the wind sorting mechanism 19 is improved. Since the blocking plate 90 of the present embodiment surrounds a range of about 270 ° excluding the notch 91 in the outer periphery of the discharge port 89 in a side view, the rotation direction R of the second processing cylinder 81 is as shown in FIG. The function of guiding the second object from the cutout portion 91 of the blocking plate 90 toward the front surface of the first feed pan 24 is almost the same whether it is clockwise or counterclockwise.

  Furthermore, when attaching the second processing case 80 and the blocking plate 90 to the threshing device 5, the side end (including the blocking plate 9) on the discharge port 89 side in the second processing case 80 is connected to one side wall of the threshing device 5. After fitting into the fitting hole 85 formed in 5a, it is only necessary to screw the mounting bolt 87 from the outer surface side of the flange 86 in the second processing case 80 toward the one side wall 5a of the threshing device 5. Very simple. In addition, since the second processing case 80 and the shielding plate 90 can be attached to the threshing device 5 at a time, compared to the case where the shielding plate 90 is configured separately from the second processing case 80, Time and effort can be reduced (efficiency of installation work can be improved).

  The present invention is not limited to the above-described embodiment, and can be embodied in various forms. For example, the blocking plate is not limited to the one integrally connected to the side end of the second processing case 80 on the discharge port 89 side, and can be embodied in various forms. For example, a configuration may be adopted in which a blocking plate configured separately from the second processing case 80 is attached to a side end portion on the discharge port 89 side of the second processing case 80, or configured separately from the second processing case 80. The structure which attaches a shielding board to the outer peripheral side rather than the discharge port 89 of the 2nd processing case 80 may be sufficient. However, in any case, it is necessary to cover at least the rear side of the second processing case 80 from the discharge port 89 (on the downstream side in the conveyance direction W of the cereal removal by the swing sorting mechanism 18) with a blocking plate.

  Further, the form of the blocking plate 90 is not limited to that of the above-described embodiment, and various forms such as a rectangular plate shape, a V shape in a side view, and a U shape in a side view can be adopted. In short, the blocking plate 90 only needs to block the second thing discharged from the second processing case 80 from flowing directly behind the threshing device 5 and being discharged from the discharge port 30 to the outside of the machine. The shape does not matter.

  In addition, the configuration of each unit is not limited to the illustrated embodiment, and various modifications can be made without departing from the spirit of the present invention.

It is a left view of a combine. It is a top view of a combine. It is a front view of a combine. It is side surface sectional drawing of a threshing apparatus. It is a skeleton figure which shows the power transmission system of a combine. It is front sectional drawing of a threshing apparatus. It is a plane sectional view near the right side in the threshing apparatus. It is a perspective view which shows the arrangement | positioning aspect of the 2nd process case with respect to a threshing apparatus. It is a perspective view which shows the arrangement | positioning relationship between a whipping cylinder and a reduction | restoration cylinder.

DESCRIPTION OF SYMBOLS 1 Traveling machine body 2 Traveling crawler 5 Threshing device 5a One side wall 6 Feed chain 17 Handling cylinder 18 Oscillating sorting mechanism 19 Wind sorting mechanism 24 First feed pan 25 Second feed pan 26 Chaff sheave 27 Chinese fan 28 Glen sheave 30 Outlet 31 First Conveyor 32 Second conveyor 33 Flouring cylinder 34 Reduction cylinder 35 Grain conveyor 36 Reduction conveyor 80 Second processing case 81 Second processing cylinder 82 Rotating shaft 90 of second processing cylinder 91 Cutout plate 91 Notch

Claims (1)

While the traveling machine body is provided with a threshing device having a handling cylinder for threshing cereals that are nipped and conveyed by a feed chain, and a swing sorting mechanism and a wind sorting mechanism arranged below the handling cylinder, One side of the threshing device is provided with a reduction cylinder in which a reduction conveyor for transporting a second thing is provided. Of the terminal portion of the reduction cylinder and one side of the threshing device, the swing sorting mechanism The upper part is communicated with a second processing case having a built-in second processing cylinder rotatable around an axis extending in a direction intersecting with the threshing conveyance direction by the swing sorting mechanism in a plan view. A combine,
On the outer peripheral side of the discharge port located in the threshing device in the second processing case, in the combine provided with a blocking plate so as to cover at least the downstream side of the threshing conveyance direction by the swing sorting mechanism ,
The blocking plate is formed in a curved shape so that the oblique lower side facing the upstream side in the conveying direction of cerealing by the swing sorting mechanism in a side view is concave,
In addition, a hook-like member that protrudes obliquely downward toward the inside of the threshing device is provided at an upper portion of the second processing case in the inner surface of one side wall of the threshing device, and in plan view The combine characterized by comprising so that the side edge part in the said threshing apparatus in the said 2nd processing case may be covered with the said bowl-shaped member .

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