JP2009165393A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester capable of preventing culms from being spilled by reducing the clearance between an assistant conveyor chain and a guide bar 109 over a long distance of conveyance while preventing the nipping force of the reaped grain culms from being deficient when a grain culm layer is thinned. <P>SOLUTION: Nipping means 104 includes the guide bar 109 facing to the conveyance action side of the assistant conveyor chain 41a orbiting between a vertically conveying device and a feed chain, and a guide holder 106 for supporting the guide bar 109 so as to be moved far and near based on the assistant conveyor chain 41a. A control motor 119 in the means for far and near driving is constituted so that when a second presence or absence sensor 122 of the grain culm, arranged in the assistant conveyor 41 detects the passage of no grain culm, the site facing to the conveyance terminal part of the assistant conveyor chain 41a in the guide bar 109 may approach. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a combine provided with a pre-cutting apparatus for harvesting cereals planted in a field and collecting grains, and a threshing apparatus.

  Conventionally, in Patent Document 1, an auxiliary conveyance device including an auxiliary conveyance chain and a pinch is provided between the vertical conveyance device in the pre-cutting processing device and the feed chain of the threshing device, and based on the detection value of the culm length detection sensor. In the case of ultra-short bowls, the movable chain rail provided on the inner diameter part of the auxiliary conveyance chain is moved by a motor so as to push it toward the pinch, and the position of the cereals inherited by the feed chain is The control to move to is disclosed.

  Moreover, in patent document 2, the 1st auxiliary conveyance apparatus and the 2nd auxiliary conveyance apparatus which consist of an auxiliary conveyance chain and a clamping rail are provided between the vertical conveyance apparatus in the cutting pretreatment apparatus, and the feed chain of the threshing apparatus. While making 1 auxiliary conveyance device adjustable in the left-right position, the conveyance range of the second auxiliary conveyance device is overlapped with the conveyance range of the first auxiliary conveyance device and the feed chain. In addition, a first take-up guide that can swing up and down is extended from the first auxiliary conveyance device side to the start end side of the second auxiliary conveyance device, and between the first auxiliary conveyance device side and the second auxiliary conveyance device. It has been disclosed that the cereal stock base does not fall into the gap.

  On the other hand, in Patent Document 3, in the configuration in which the culm is delivered to the feed chain in an appropriate posture by the auxiliary transfer chain provided between the vertical transfer chain and the feed chain in the pre-cutting processing apparatus, The squeezing force adjusting means that acts on the layer of cereal bundles (hereinafter referred to as cereal layer) conveyed by the detection result of the amount of cereal transported and adjusts the squeezing action received by the cereal layer from the auxiliary transport chain Are provided. This scraping action force adjusting means is provided with a grain spill prevention body on the upper cover of the auxiliary transport chain so that the position of the sprouting deviation can be adjusted in a direction perpendicular to the grain transport direction of the auxiliary transport chain. The forward / backward drive motor and the screw rod can be moved forward and backward.

Then, when the amount of the transported culm detected by the transported culm amount detection sensor is large, the culm misalignment prevention body is advanced, and the interval between the auxiliary transport chain and the culm is increased to streak into the culm layer. Reduce the acting force. On the other hand, when the amount of the transported culm is small, the position of the culm misalignment prevention body is adjusted in the backward direction, the interval between the auxiliary transport chain and the culm is reduced, and the squeezing action force on the cereal layer is increased, It is possible to prevent the occurrence of defective culm bites (spilled spills) and to pass the cereals smoothly and properly to the feed chain.
Japanese Patent Laid-Open No. 10-295139 JP 2007-244229 A Japanese Utility Model Publication No. 10-281

  However, in Patent Document 1, when the amount of the culm bundle at the end of cutting becomes small, the gap between the auxiliary conveyance chain and the pinch cannot be extremely reduced, and the occurrence of spilling of the cereal is prevented. I could not. Even in Patent Document 2, the first take-up guide that can swing up and down is extended so that the cereal base portion does not fall into the gap between the first auxiliary conveyance device side and the second auxiliary conveyance device. It was not possible to prevent the cereals from falling off when the amount of cereal grains at the end of cutting was thin.

  Furthermore, in Patent Document 3, while the culm bundle is in contact with the cereal misalignment prevention body, it is possible to prevent the occurrence of cereal squeezing failure (spilling), but the cereal layer is the location of the cereal misalignment prevention body. It was still impossible to prevent the occurrence of spilled cereals at the locations that passed away.

  The present invention has been made in view of the above problems, and when the culm layer becomes thin, the gap between the auxiliary transport chain and the sandwiching guide culm can be reduced over a long transport distance, An object of the present invention is to provide a combine that can prevent the occurrence of spillage by preventing the holding force of the slab from becoming insufficient.

  In order to achieve the above object, a combine according to a first aspect of the present invention includes a traveling machine body on which a threshing portion with a feed chain is mounted, and a cutting pre-treatment device attached to a front part of the traveling machine body, The pre-processing device includes a vertical conveying device that conveys the stock base portion of the harvested cereal rearward obliquely upward, and an auxiliary transport device that relays the transportation of the stock base portion of the harvested cereal cocoon between the vertical transport device and the feed chain. The auxiliary transport device is configured to sandwich and convey the stock portion of the harvested cereal meal by the auxiliary transport chain and the clamping means biased toward the auxiliary transport chain. And a perspective movement drive means for moving the clamping means relative to the auxiliary conveyance chain, and the clamping means approaches the auxiliary conveyance device by the operation of the perspective movement driving means at the end of grain harvesting. Like It is those that have been made.

  According to a second aspect of the present invention, in the combine according to the first aspect, the clamping means includes a guide rod facing the conveying action side of the auxiliary conveying chain that circulates between the vertical conveying device and the feed chain. A guide holder that supports the guide basket so that it can move in a perspective direction with respect to the auxiliary conveying chain, and the perspective drive means detects that the grain culm detection means disposed in the pre-harvest processing device has not passed the culm. When it does, it is comprised so that the site | part which opposes the conveyance termination | terminus part of the said auxiliary conveyance chain among the said guide rods may be approached.

  According to a third aspect of the present invention, in the combine according to the second aspect of the invention, the perspective drive means detects the auxiliary conveying chain among the guide troughs when the persimmon detecting means detects passage of the persimmon. The part facing the conveyance terminal part is separated so as to return to the position before the approach.

  According to the first aspect of the present invention, there is provided a traveling machine body on which a threshing portion with a feed chain is mounted, and a pre-cutting processing device mounted on a front part of the traveling machine body, wherein the pre-cutting processing device is a cutting crop. A combine having a vertical conveying device that conveys the stock base portion of the straw diagonally upward and an auxiliary transport device that relays the transportation of the stock base portion of the harvested cereal rice cake between the vertical transport device and the feed chain. The auxiliary conveying device is configured to nipping and conveying the stock base portion of the harvested cereal rice bran by the auxiliary conveying chain and the clamping means biased toward the auxiliary conveying chain, and the clamping means is Perspective movement drive means for moving the auxiliary conveyance chain in the distance direction is provided, and the clamping means is configured to approach the auxiliary conveyance device by the operation of the perspective movement drive means at the end of grain harvesting. Is.

  Therefore, when the culm layer in the auxiliary transport device becomes thin at the end of cutting, turning, etc., the clamping means approaches the auxiliary transport device by the operation of the perspective drive means. It is possible to prevent the harvested cereals from being smoothly transported by preventing the squeezing force of the culm from falling out of the gap between the sandwiching means and the auxiliary transport chain.

  According to the second aspect of the present invention, the clamping means includes a guide rod facing the conveying action side of the auxiliary conveying chain that circulates between the vertical conveying device and the feed chain, and the guide rod is connected to the auxiliary conveying chain. And a guide holder that supports the perspective movement so that the perspective movement driving means detects when the grain detection means arranged in the pre-cutting processing device detects no passage of grain Since the portion facing the conveyance end portion of the auxiliary conveyance chain is configured to approach, when the cereal detection means detects no cereal passage, the perspective drive means automatically In operation, the guide rod can be brought close to the auxiliary transport chain. Therefore, even if the operator does not operate the far-and-move drive means, it is possible to prevent the harvested cereal meal from being smoothly transported by preventing it from falling off from the gap between the clamping means and the auxiliary transport chain.

  According to a third aspect of the present invention, when the movement detection means detects that there is a passage of the culm, the perspective drive means detects a part of the guide urn that faces the conveyance end of the auxiliary conveyance chain. Since they are separated so as to return to the position before the approach, there is an effect that the normal state can be automatically returned even when the cutting operation is resumed.

  DESCRIPTION OF EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings. 1 is a left side view of the combine, FIG. 2 is a plan view of the combine, FIG. 3 is a drive system diagram of the combine, FIG. 4 is a schematic side view of the pre-cutting processing device, and FIG. 5 is a schematic plan view of the pre-cutting processing device. FIG. 6 is an enlarged plan view of the auxiliary conveyance device, FIG. 7 is a partial enlarged sectional view of the auxiliary conveyance chain and the guide rod, and FIG. 8 is a functional block diagram of the control means.

[Overall configuration of combine]
The overall structure of the combine will be described with reference to FIGS. 1 and 2. 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.

  The combine according to the present embodiment includes a traveling machine body 1 supported by a pair of left and right traveling crawlers 2 as traveling portions. At the front part of the traveling machine body 1, there is a cutting pretreatment device 3 for four-row cutting for cutting into the threshing device 5 while cutting the cereal, around the cutting rotation fulcrum shaft 4a by a single-acting lifting hydraulic cylinder 4. It is attached to be adjustable up and down. A threshing device 5 having a feed chain 6 and a grain tank 7 for storing grains taken out from the threshing device 5 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. A swivelable discharge auger 8 is provided at the rear part of the traveling machine body 1, and the grains inside the grain tank 7 are discharged from the throat throw 9 of the discharge auger 8 to a truck bed or a container. ing. An operation unit 10 is provided on the right side of the pre-cutting processing device 3 and on the front side of the grain tank 7.

  A steering handle 11 and a driver seat 12 are arranged in the driver 10. The steering handle 11 is provided on a handle column 13 disposed in front of the driver seat 12. In addition, a main speed change lever 14, a sub speed change lever 15, a threshing clutch lever 16, and a mowing clutch lever 17 are arranged in the operating unit 10. The levers 14, 15, 16, 17 and the like are provided on a lever column 18 disposed on the left side of the driver seat 12. An engine 20 as a power source is disposed in the traveling machine body 1 below the driver seat 12. On one side of the grip portion of the main transmission lever 14, an auto lift switch as a forcible raising operation means for forcibly raising the pre-cutting processing device 3 to a non-working height higher than the set cutting height and also forcibly And an auto-set switch as a forced lowering operation means for lowering to a predetermined (set) cutting height, and the cutting pre-processing device 3 is manually operated on the front surface of the gripping portion by an arbitrary height. A cutting lift lever for raising and lowering is provided (both not shown).

  As shown in FIG. 1, left and right track frames 21 are arranged on the lower surface side of the traveling machine body 1. The track frame 21 includes a drive sprocket 22 that transmits the power of the engine 20 to the traveling crawler 2, a tension roller 23 that maintains the tension of the traveling crawler 2, and a plurality of track rollers that hold the ground side of the traveling crawler 2 in a grounded state. 24 and an intermediate roller 25 that holds the non-grounded side of the traveling crawler 2 are provided. The drive sprocket 22 is disposed on a mission case 26 provided on the front end side of the track frame 21 via an axle 27 (see FIG. 3). The driving sprocket 22 supports the front side of the traveling crawler 2, the tension roller 23 supports the rear side of the traveling crawler 2, the track roller 24 supports the grounding side of the traveling crawler 2, and the intermediate roller 25 supports the non-traveling crawler 2. The ground side will be supported.

[Configuration of pre-cutting device]
Next, the structure of the pre-cutting processing device 3 will be described with reference to FIGS. 1 and 2. As shown in FIGS. 1 and 2, below the cutting frame 29 connected to the cutting rotation fulcrum shaft 4a, a clipper type cutting blade that cuts the stock of uncut grain culm (crop) planted in the field. A device 30 is provided. In front of the cutting frame 29, a grain culling pulling device 31 for four ridges that raises an uncut grain culm planted in a field is arranged. Between the grain raising apparatus 31 and the front end (feed start side) of the feed chain 6, a grain feeder 32 for conveying the harvested grain produced by the cutting blade device 30 is arranged. In addition, in front of the lower part of the cereal habit raising device 31, a four-row weed body 33 for weeding uncut cereals planted in a farm is protruded. While the traveling crawler 2 is driven by the engine 20 and moved in the field, the uncut grain culms planted in the field are continuously cut by the pre-cutting processing device 3.

  Next, the harvesting drive structure for the combine will be described with reference to FIG. As shown in FIG. 3, the grain raising device 31 has a four-case raising case 35 having a plurality of raising tines 34 that erect uncut wheat grains that have been weeded by the weed body 33. The grain feeder 32 includes left and right right star wheels 36R and left and right right take-up belts 37R that squeeze the stock side of the two right-side grains introduced from the right-side two-stage pulling case 35, and the left side. It has left and right left star wheels 36L and left and right left rake belts 37L that rake up the stock side of the left cereal grain cereals introduced from the two pulling cases 35. The cutting blade device 30 is a clipper type that cuts the stock of four rows of cereals scraped by the right star foil 36R and the left and right right take-up belts 37R, the left star wheel 36L and the left and right left take-up belts 37L. Left and right cutting blades 38.

  Further, the cereal haul conveying device 32 is configured to transfer the right stocker of the right two reaped harvested rice straws by the right side two pieces of the star foil 36R and the rake belt 37R to the rear, the right stock former carrying chain 39R. And the left stock transport that joins the stock side of the two left-hand side harvested cereals that have been scraped by the star foil 36L and the scraping belt 37L on the left-hand side to the transport end of the right stock transport chain 39R. Chain 39L. The stock base sides of the four reaped grain straws transported by the left and right stock transport chains 39R and 39L are joined to the transport end portion of the right stock transport chain 39R.

  The corn straw transporting device 32 includes a vertical transport chain 40 that inherits the stock side of the harvested cereals for four ridges from the right stock transport chain 39R, and a transport start end of the feed chain 6 from the transport terminal end of the vertical transport chain 40. And an auxiliary conveyance device 41 for conveying the stock side of the harvested cereals for four lines. As will be described in detail later, the auxiliary conveyance device 41 includes an auxiliary conveyance chain 41a and a guide bar as a guide rod extending along the conveyance side. From the vertical conveyance chain 40, the stock side of the four sown cereal grains is conveyed to the conveyance start end of the feed chain 6 via the auxiliary conveyance device 41.

  The grain culm transporting device 32 is transported by the right stalk transporting tine 42R that transports the head of the harvested stalks for the two right-hand ridges that are transported by the right cultivating transport chain 39R, and the left cultivating transport 39L. It has a left tip transporting tine 42L that transports the tip side of the harvested cereal rice cake for the two left-hand sides. In the handling room of the threshing device 5, the tip side of the harvested cereal rice bran for 4 strips will be conveyed.

  As shown in FIG. 3, a cutting input shaft 45 disposed on the cutting rotation fulcrum shaft 4 a described above is provided. The pulling horizontal transmission shaft 49 is connected to the cutting input shaft 45 through the vertical transmission shaft 46, the horizontal transmission shaft 47, and the pulling transmission mechanism 49. The pulling lateral transmission shaft 48 is connected to the pulling tine drive shaft 50 of each pulling case 35 for four lines. A pulling case 35 is erected on the rear side of the weed body 33 and above the cutting frame 29, and the pulling tine drive shaft 50 protrudes from the rear surface on the upper end side of the pulling case 35. The pulling tine chain 34 a provided with a plurality of pulling tines 34 is driven via the pulling tine drive shaft 50 and the pulling lateral transmission shaft 49.

  As shown in FIG. 3, the left and right cutting blades 38 are connected to the lateral transmission shaft 47 via the left and right crankshafts 52a and 52b. The left and right cutting blades 38 are configured to be driven synchronously via the lateral transmission shaft 47. The cutting blade device 30 is divided at the central portion of the cutting width for four lines to form left and right cutting blades 38, and the left and right cutting blades 38 are reciprocated in opposite directions, and left and right generated by the reciprocating movement. The vibration (inertial force) of the cutting blade 38 can be offset.

  As shown in FIG. 3, the rotational force of the cutting input shaft 45 is transmitted to each drive unit of the grain feeder 32 via a longitudinal transmission shaft 46 and a lateral transmission shaft 47. That is, the rear conveyance drive shaft 54 is connected to the cutting input shaft 45, and the auxiliary conveyance chain 41a and the right tip conveyance tine 42R in the auxiliary conveyance device 41 are driven via the rear conveyance drive shaft 54. The right transfer drive shaft 55 is connected to the vertical transmission shaft 46, and the right stock former transfer chain 39R and the right tip transfer tine 42R, the right star wheel 36R, and the right take-up belt 37R are driven via the right transfer drive shaft 55. It is configured to do.

  Further, the vertical conveyance transmission shaft 56 is connected to the right conveyance drive shaft 55, and the vertical conveyance chain 40 is driven via the vertical conveyance transmission shaft 56. A left conveying drive shaft 57 provided with a pulling transmission mechanism 48 is connected to the left end side of the lateral transmission shaft 41. The left stock former transfer chain 39L and the left tip transfer tine 42L, the left star wheel 36L and the left take-up belt 37L are driven via the left transfer drive shaft 57.

[Auxiliary transfer device]
The auxiliary conveyance chain 41a in the auxiliary conveyance device 41 is wound around a drive sprocket 101a and one driven sprocket 101b arranged on the support frame 100. The other driven sprocket 101b is supported by the rotating arm 102, and is configured to be able to apply tension to the auxiliary transport chain 41a by the biasing spring 103 (see FIG. 6).

  The clamping means 104 in the auxiliary conveyance device 41 includes a guide bar 109 as a guide rod facing the conveyance action side of the auxiliary conveyance chain 41a, and a guide holder 106 that supports the guide bar 109 so as to be movable in the direction of the auxiliary conveyance chain 41a. And. One end (upstream side in the transport direction) of the guide holder 106 is rotatably attached to the support frame 107 via a support shaft 108 (see FIG. 6).

  The guide bar 109 facing the conveyance action side of the auxiliary conveyance chain 41a is constituted by a pair of front and rear slide arms 111 pivotally attached to a middle portion thereof by a vertical pivot pin 110. The guide bar 109 extends from a position ahead of the feed (conveyance) start end of the auxiliary transport chain 57 to a feed (conveyance) end portion (along the movement trajectory on the feed side of the auxiliary transport chain 41a). It is formed in the form of a mold (see FIG. 6). Further, the guide bar 109 is disposed between a pair of upper and lower unit tooth plates 57a in the auxiliary conveyance chain 41a (see FIGS. 6 and 7).

  The pair of front and rear slide arms 111 are penetrated by the guide holder 106 so as to be movable relative to the auxiliary transport chain 41a. The outer periphery of each slide arm 111 is compressed between the retaining flange 112 that slides in the axial direction integrally with each slide arm 111 and the side plate 106a far from the auxiliary conveyance chain 41a in the guide holder 106. A coil spring 113 is fitted. As a result, the pair of slide arms 111 and thus the guide bar 109 are biased so as to approach the feeding side of the auxiliary transport chain 41a. The part where the culm layer T is sandwiched between the guide bar 109 and the auxiliary transport chain 41 a in the auxiliary transport device 41 is a part slightly closer to the tip side than the cereal stock part by the vertical transport device 40. Therefore, the stockholder side is held.

  Further, the guide holder 106 is provided with a spring receiving portion 114 extending on the side far from the support shaft 108 which is the center of rotation, and a contact portion 116 is provided via a compression spring 115. The spring receiving portion 114 and the contact portion 116 are connected by an elastic cover body 117 that covers the compression spring 115. The cam 118 that abuts on the abutting portion 116 is mounted eccentrically with respect to the drive shaft 119a of the control motor 119 that can rotate forward and backward (see FIGS. 6 and 8; Corresponds to the driving means). Accordingly, in the state of FIG. 6 (the state where the cam 118 is retracted, the position where the amount of eccentricity is small), the spring receiving portion 114 side of the guide holder 106 is not pressed so much. The part that faces is substantially parallel to the conveying action part. Further, the guide bar 109 is almost uniformly pressed by the pair of slide arms 111 and the respective compression coil springs 113 toward the conveying action side of the auxiliary conveying chain 41a as a whole. On the other hand, as shown in FIG. 8, in the state where the cam 118 is advanced (a position where the eccentricity is large), the spring receiving portion 114 side of the guide holder 106 is pressed so as to be largely displaced by the cam 118, so The gap dimension H1 (see FIG. 7) between the auxiliary transfer chain 41a at the downstream end in the direction (the start end side of the feed chain 6) and the transfer action surface becomes smaller than the gap on the upstream side in the transfer direction.

  Note that a first culm presence / absence sensor 105 (also referred to as an L sensor) for detecting whether or not the culm is transported is disposed at the transport start end of the vertical transport device 40 (see FIG. 5). . In addition, you may provide the 1st grain stalk presence-absence sensor 105 in the starwheel 36 side of the grain stalk conveyance downstream rather than the cutting blade apparatus 30. FIG. In addition, a second wrinkle presence / absence sensor 122 (an example of the wrinkle detection means in the claims of the present application) for detecting whether or not the wrinkle is being transported is disposed at the transport start end of the auxiliary transport device 41. (See FIGS. 5, 6 and 8).

  Further, a long and short hook sensor 125 is disposed between the transfer terminal portions of the auxiliary transfer device 41 and the right tip transfer tine 42R and the entrance 5a to the handling chamber in which the handling cylinder 60 is housed (see FIG. 5). ). When the tip part of the culm comes into contact with both the long culm sensor unit 125a and the short culm part sensor 125b, the transported culm is determined to be “long culm”, and on the other hand, only the short culm sensor 125b When the tip portion comes into contact, the conveyed rice cake is determined to be “ordinary rice cake”. Then, when the tip of the culm is not in contact with both the long culm sensor portion 125a and the short culm portion sensor 125b, the transported culm is determined to be a “short culm”.

[Configuration of threshing device]
Next, with reference to FIG.1 and FIG.2, the structure of the threshing apparatus 5 is demonstrated. As shown in FIG. 1 and FIG. 2, the threshing device 5 includes a handling cylinder 60 for threshing threshing, a rocking sorter 61 that sorts shed matter falling below the handling cylinder 60, and a tang fan 62. A processing cylinder 63 that reprocesses the threshing waste taken out from the rear part of the handling cylinder 60 and a dust exhaust fan 71 that discharges dust at the rear part of the swing sorter 61 are provided. In addition, the rotating shaft core line of the handling cylinder 60 is extended along the conveyance direction (in other words, the advancing direction of the traveling body 1) of the cereal by the feed chain 6. The stockholder side of the cereals conveyed by the cereal conveyance device is inherited by the feed chain 6 and is nipped and conveyed. Then, the tip side of this cereal is carried into the handling chamber of the threshing device 5 and threshed by the handling drum 60.

  Below the swing sorter 61, the first conveyor 64 for picking up the grain (the first thing) sorted by the swing sorter 61 and the second for taking out the second thing such as a grain with a branch raft. A conveyor 65 is provided. The two conveyors 64 and 65 of this embodiment are arranged in the order of the first conveyor 64 and the second conveyor 65 from the front side in the traveling direction of the traveling machine body 1 to the upper surface side of the traveling machine body 1 above the rear part of the traveling crawler 2 in a side view. It is installed.

  The oscillating sorter 61 is configured such that threshing that has leaked from a receiving net (not shown) stretched below the handling cylinder 60 is peristally sorted (specific gravity selected) by a feed pan and a chaff sheave (not shown). ing. Grains that fall from the swing sorter 61 are removed by the sorting air from the tang fan 62 and fall to the conveyor 64 first. A cereal conveyor 66 extending in the vertical direction is connected to a terminal portion of the first conveyor 64 that protrudes outward from one side wall (right side wall in the embodiment) of the threshing device 5 that is close to the grain tank 7. . The grain taken out first from the conveyor 64 is carried into the grain tank 7 via the cereal conveyor 66 and collected in the grain tank 7.

  Further, the swing sorter 61 is configured to drop a second thing such as a grain with a branch stem on the second conveyor 65 by peristaltic sorting (specific gravity sorting) from the chaff sheave. The second item dropped from the chaff sheave falls on the second conveyor 65. Of the second conveyor 65, a terminal portion protruding outward from one side wall near the grain tank 7 in the threshing device 5 intersects with the whipping conveyor 66 and extends in the front-rear direction, and a reprocessing portion at the tip. 68 is connected to the upper surface side of the front portion (feed pan) of the rocking sorter 61, and the second item is returned to the upper surface side of the feed pan and re-sorted.

  On the other hand, a waste chain 69 is disposed on the rear end side (feed end side) of the feed chain 6. The waste passed through the feed chain 6 from the rear end side of the feed chain 6 (the grain from which the grain has been threshed) is discharged to the rear of the traveling machine body 1 in a long state, or the rear side of the threshing device 5 After being cut to a suitable length by the waste cutter 70 provided at the front, the paper is discharged to the lower rear of the traveling machine body 1.

  Next, the drive structure of the mission case 26 and the drive structures of the threshing device 5, the feed chain 6, the waste chain 69, the waste cutter 70, etc. will be described with reference to FIG. As shown in FIG. 3, the output shaft 75 of the engine 20 is connected to the input shaft 78 of the transmission case 26 via a travel transmission belt 76 and a belt tension clutch 77. The rotational driving force of the engine 20 is transmitted from the output shaft 75 to the transmission case 26 and shifted, and then transmitted to the left and right traveling crawlers 2 via the left and right axles 27, so that the left and right traveling crawlers 2 rotate the engine 20. It is configured to be driven by force. In addition, a discharge auger drive shaft 79 is connected to the output shaft 75, and the discharge auger 8 is driven via the discharge auger drive shaft 79 by the rotational driving force from the engine 21, and the grains in the grain tank 7 are transferred to a container or the like. It is configured to be discharged.

  Moreover, the threshing drive shaft 80 which transmits the rotational drive force from the engine 20 to the handling cylinder 60 and the process cylinder 63 is provided. A threshing drive shaft 80 is connected to an output shaft 75 of the engine 20 via a threshing drive belt 81 and a threshing belt tension clutch 82. The threshing drive shaft 80 is connected to a handling cylinder shaft 83 that supports the handling cylinder 60 and a processing cylinder shaft 84 that supports the processing cylinder 63. The handling cylinder 60 and the processing cylinder 63 are configured to rotate at a substantially constant rotational speed by the rotational force of the engine 20 at a substantially constant rotational speed. A sorting input belt 85 is connected to the threshing drive shaft 80. The feed chain 6, the swing sorter 61, the Kara fan 62, the first conveyor 64, the second conveyor 65, the dust exhaust fan 71, the exhaust fan, via the sorting input belt 85 by the rotational force of the engine 20 at a substantially constant rotational speed. The cocoon cutter 70 is configured to rotate at a substantially constant rotational speed.

  Although details of the drive structure of the mission case 26 and the like are not shown in the figure, as shown in FIG. 3, the mission case 26 includes a linearly-traveling hydraulic continuously variable transmission mechanism having a pair of straight-traveling hydraulic pumps and a straight-traveling hydraulic motor. 90 and a hydraulic continuously variable transmission mechanism 93 for turning having a pair of turning hydraulic pumps and a turning hydraulic motor. A linear hydraulic pump and a turning hydraulic pump are connected to the input shaft 78 of the mission case 26 so that each pump is driven. Further, a cutting drive PTO shaft 94 is disposed horizontally and horizontally inside the mission case 26. The mowing drive PTO shaft 94 is driven by a straight hydraulic motor. One end side of the cutting drive PTO shaft 94 projects from the transmission case 26 to the left outer side. A cutting drive PTO shaft 94 is connected to the cutting input shaft 45 via a cutting drive belt 95.

  The sub-transmission gear mechanism provided in the mission case 26 is configured so that the operation of the sub-transmission lever 15 can be switched to a neutral or low-speed output or high-speed output shift mode.

  The output rotational speed of the straight traveling hydraulic motor is switched to the high speed side or the low speed side by the sub-shift operation. Further, by switching the swing valve by the steering handle 11, the swing cylinder is operated, and the angle of the swash plate of the swing hydraulic pump is changed steplessly. As a result, the output rotation speed of the turning hydraulic motor changes steplessly by operating the steering handle 11, or the output rotation of the turning hydraulic motor is reversed. That is, the angle of the swash plate changes in proportion to the amount of steering operation of the steering handle 11 in the left-right direction (steering angle), and the output rotational speed of the turning hydraulic motor changes or reverses, so The (left / right turning angle) is configured to be changed to the left or right.

  Further, the rotational output of the straight traveling speed change output shaft in the mission case 26 is transmitted to the left and right traveling crawlers 2 via the straight traveling speed change output gear, so that the traveling machine body 1 moves in the forward direction or the backward direction. Yes. A parking brake that brakes the left and right traveling crawlers 2 and a vehicle speed sensor 121 that detects the driving speed of the left and right traveling crawlers 2 (the moving speed of the traveling machine body 1 and the vehicle speed) are disposed on the speed change output shaft for straight travel. Has been.

[Handling depth control and auxiliary transport control]
Next, the handling depth control and the “auxiliary conveyance control” which is a subroutine thereof in the pre-cutting processing apparatus 3 of the present embodiment will be described. FIG. 9 is a functional block diagram of the control means, which includes a cutting and threshing operation controller 120 such as a microcomputer having a ROM storing a control program and a RAM (including an EEPROM) storing various data. As shown in FIG. 9, on the input side of the mowing and threshing work controller 120 configured by a microcomputer, when the automatic handling depth control is to be executed, an automatic handling depth switch 124 that the operator presses and the mowing clutch lever 17 are pressed. A reaping switch 126 for driving the reaping pretreatment device 3 by the operation of, a reaping portion rotation sensor 123 for detecting the rotational speed of the reaping input shaft 45 of the reaping pretreatment device 3, and a threshing device by operating the threshing clutch lever 16. Threshing switch 127 for driving 5 and a culm presence / absence sensor 122 for detecting the presence / absence of a culm (cutted culm) transported in the culm vertical transport device 40 (corresponding to the culm detection means in the claims) A vehicle speed sensor 121 and a timer 130 are connected.

  As shown in FIG. 9, on the output side of the mowing and threshing work controller 120, a handling depth control motor 131 capable of driving the vertical conveyance device 40 to the deep handling side (forward rotation) and driving to the shallow handling side (reverse rotation); Similarly, a cutting clutch 132 for interrupting the driving force of the cutting pretreatment device 3, a handling depth limit switch 133 for detecting when the vertical conveying device 40 has moved to the deepest handling limit position, A shallow depth limit switch 134 for detecting when it moves to the limit position on the shallow handling side, and a control motor 119 for moving the clamping means 104 in the auxiliary conveyance device 41 relative to the auxiliary conveyance chain 41a (in claims) Equivalent to a part of the perspective drive means). The cutting clutch 132 is a belt tension clutch or the like that transmits power to the cutting input shaft 45 via the cutting drive belt 95 to the cutting drive PTO shaft 94.

  Next, the handling depth control of the vertical conveying device 40 in the pre-cutting processing device 3 will be described with reference to the main flowchart of FIG.

  In the handling depth control during the harvesting and threshing operation of the cereal planted in the field, the following control shown in the main flowchart of FIG. 10 is executed. By turning on an auto set switch (not shown), the pre-cutting processing device 3 descends to the set cutting height and starts running. Next, with the reaping switch 126 turned on (S1: yes) and the threshing switch 127 turned on (S2: yes), the handling depth automatic switch 124 is turned on (S3: yes).

  In this state, if the presence / absence of corn straw in the middle of the vertical conveying device 40 is detected by the first corn straw presence / absence sensor (also referred to as L sensor) 105 (S4: yes), the handling depth control is executed (S5). ). Here, “handling depth control” means that a long and short culm sensor (also referred to as an MH sensor) 125 detects the length of the culm to be transported, and if the culm is determined to be long, the vertical transport device The handling depth control motor 131 is driven so as to move the conveyance end portion of 40 to the shallow handling side, and the inheritance position of the root portion of the cereal at the start end of the feed chain 6 is changed to Displace the grain head at the shallow handle side. On the contrary, if it is determined that the cereal is short, the handling depth control motor 131 is driven so as to move the conveying terminal end of the vertical conveying device 40 to the deep handling side, and the cereal at the starting end of the feed chain 6 is driven. The inheritance position of the stock base part is changed, and the grain tip part with respect to the handling cylinder 60 is displaced to the deep handling side.

[Auxiliary transfer control]
The “auxiliary transport control” of the vertical transport device 40 will be described with reference to the flowchart of FIG. “Auxiliary conveyance control” means “when the amount of cereals conveyed to the auxiliary conveyance device 41 is reduced at the time of turning in the field or at the end of cutting, etc. Grain which makes the part which opposes the conveyance termination | terminus part of the auxiliary conveyance chain 41a in the guide bar 109 approach, or returns to the normal clamping state (the guide bar 109 is substantially parallel to the conveyance path of the auxiliary conveyance chain 41a). “Control to execute the adjustment operation of the heel pinching width”.

  In the embodiment, the “auxiliary transport control” is executed at the time of turning into the next one stroke from the end of one stroke in the field, and the “handling control” (S5) subroutine in the flowchart of FIG. The following control may be automatically executed.

  Next to the start of “auxiliary conveyance control” in FIG. 11, the detection value of the second culm presence / absence sensor 122 that is turned on when the presence of culm in the middle of conveyance is detected in the vertical conveyance device 40 is determined. (S11). When the detected value of the second cereal presence / absence sensor 122 is ON (S11: yes), the control motor 119 is reversely rotated by a predetermined angle (for example, 180 degrees) (S12). As a result, the cam 118 is in a retracted state (a position where the amount of eccentricity is small), and the spring receiving portion 114 side of the guide holder 106 is not pressed so much, so that the portion of the guide bar 109 that faces the conveyance action side of the auxiliary conveyance chain 41a However, it is substantially parallel to the conveying action part. Further, the guide bar 109 is almost uniformly pressed by the pair of slide arms 111 and the compression coil springs 113 as a whole toward the conveying action side of the auxiliary conveying chain 41a (S13). In the state where the second culm presence / absence sensor 122 continues to be ON, since the harvesting operation is being performed for one stroke, the normal handling depth control (S5) is continued.

  When there is no cereal (S11: no), the control motor 119 is rotated forward by a predetermined angle (for example, 180 degrees) (S14). Accordingly, the maximum eccentric amount side of the cam 118 presses the spring receiving portion 114 of the guide holder 106, and the conveyance action surface of the auxiliary conveyance chain 41 a at the downstream end in the conveyance direction (the start end side of the feed chain 6) of the guide bar 109. Is smaller than the gap on the upstream side in the transport direction (S15). Then, as shown in FIG. 8, the reduced culm layer T is firmly held between the downstream end in the conveyance direction of the guide bar 109 and the conveyance action surface of the auxiliary conveyance chain 41a.

  In addition, when the cutting operation is resumed in the next stroke and the harvested culm comes into contact with the second culm presence sensor 122 and is turned on (S11: yes), normal handling depth control is performed as in the previous case. (S5) will be continued.

  Note that the control motor 119 may be configured to rotate only in one direction, and the cam 118 may be intermittently rotated every 180 degrees. The second culm presence / absence sensor 122 is omitted, and the presence / absence of the culm is determined by the detection value of the first long / short culm sensor 105 (detection at the time of change from on to off), and “auxiliary conveyance control” is executed. You may do it.

  As another embodiment, the means for moving each slide arm 111 supported so as to be movable back and forth with respect to the guide holder 106 by means of an actuator (not shown) is configured to correspond to the perspective drive means of the present invention. May be. In that case, the compression coil spring 113 for each slide arm 111 may be omitted.

It is a side view of the combine for 4 thread cutting of 1st Embodiment of this invention. It is the same top view. It is a drive system diagram of a combine. It is a partial schematic side view of a cutting pretreatment apparatus. It is a schematic plan view of a cutting pretreatment apparatus. It is a top view of an auxiliary conveyance device. It is the VII-VII line enlarged view of FIG. It is a figure which shows the attitude | position change adjustment of the guide bar at the time of a cutting end. It is a functional block diagram of a control part. It is a main flowchart of handling depth control. It is a subroutine flowchart of operation preparation control.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling machine body 3 Cutting pretreatment apparatus 41 Auxiliary conveyance apparatus 41a Auxiliary conveyance chain 104 Clamping means 105 1st grain wrinkle presence sensor 106 Guide holder 109 Guide bar 115 Compression spring 116 Contact part 118 Cam 119 Control motor 120 Controller

Claims (3)

A traveling machine body equipped with a threshing section with a feed chain, and a pre-cutting processing device mounted on the front part of the traveling machine body, the pre-cutting processing device obliquely rearward and upward of the stock base part of the harvested grain A combine having a vertical conveying device for conveying, and an auxiliary conveying device for relaying the conveyance of the root part of the harvested cereal rice cake between the vertical conveying device and the feed chain,
The auxiliary conveying device is configured to nipping and conveying the stock portion of the harvested cereal meal by the auxiliary conveying chain and the clamping means biased toward the auxiliary conveying chain,
Comprising a perspective drive means for moving the clamping means relative to the auxiliary transport chain;
The combiner characterized in that the sandwiching means is configured to approach the auxiliary transport device by the operation of the perspective drive means at the end of grain harvesting. The clamping means includes a guide rod that faces the conveying action side of the auxiliary conveyance chain that circulates between the vertical conveyance device and the feed chain, and a guide that supports the guide rod so as to be movable relative to the auxiliary conveyance chain. With a holder,
The perspective drive means closes a portion of the guide rod facing the conveyance terminal portion of the auxiliary conveyance chain when the culm detection unit arranged in the pre-cutting processing device detects that the culm has not passed. The combine according to claim 1, which is configured as described above.   The perspective drive means is separated so as to return the portion of the guide rod facing the conveyance terminal end of the auxiliary conveyance chain to the position before the approach when the particle detection device detects that the particle has passed. The combine according to claim 2, wherein the combine is made.

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