JP4101153B2 - Combine harvester grain transport structure - Google Patents

Description

The present invention comprises a holding and conveying mechanism for holding and conveying the stock side of the harvested cereal rice cake, and a locking and conveying mechanism for engaging and conveying the tip side of the harvested rice cake cereal, and the harvested rice cake is tilted from the standing posture. Equipped with a cereal conveying device configured to convey while changing the posture toward the end , and equipped with an auxiliary conveying device including a longitudinally rotating endless conveying chain, and by the auxiliary conveying device, the stock side of the harvested cereal The present invention relates to a harvested corn straw transport structure for a combine that is configured so as to be delivered to the feed chain from the clamping transport mechanism.

  In the combine, the amount of crops harvested per unit time changes in proportion to the vehicle speed. In addition, it is desirable that the grain feeder conveys a series of harvested grains with an appropriate layer thickness. If the amount of grains to be carried decreases and the thickness of the harvested grains becomes too thin, the sandwiched Since the holding power of the harvested cereal mash by the transport mechanism becomes too weak and the transport posture of the chopped cereal cocoon is likely to be disturbed, it is likely to cause a transport failure or the like due to the disorder of the transport posture. Conversely, if the amount of cereals to be conveyed increases and the layer thickness of the harvested cereals becomes too thick, the holding power of the harvested cereals by the holding and conveying mechanism becomes too strong, and the harvested cereals are difficult to be transported and easily clogged. For this reason, it becomes easy to cause a conveyance failure or the like due to the clogging.

  Therefore, by changing the driving speed of the grain feeder in synchronization with or substantially in synchronism with the speed change of the vehicle speed, the grain feeder conveys a series of harvested grains with an appropriate layer thickness regardless of changes in the vehicle speed. It is considered to improve the conveyance performance of the harvested cereals by the culm conveying device.

  On the other hand, in the threshing device, in order to ensure the threshing performance, a feed chain that sandwiches and conveys the stock side of the harvested cereal mill, a handling cylinder that performs a handling action on the tip side of the harvested cereal mill, etc. Is considered to be driven at a constant speed suitable for threshing regardless of the change in vehicle speed. Therefore, depending on the vehicle speed, the grain feeder and feed chain that conveys the harvested grain. A large speed difference occurs between the two. In addition, while the grain feeder is configured to convey the harvested grain while changing the posture from the standing posture to the sideways posture, the feed chain is suitable for the threshing process. It is configured as a vertical rotation type that conveys in a sideways posture.

  From these points, when it is configured to directly deliver the harvested cereal to the feed chain from the cereal conveyor, the posture change of the harvested culm and the significant change in the conveyance speed are performed at the same time. Therefore, at the delivery location, the conveying posture of the harvested cereal is likely to be disturbed, and it is likely to cause a conveyance failure or dropout due to the disordered conveying posture.

  Therefore, in the harvested wheat straw transporting structure of the combine as described above, it is equipped with a vertical rotation type auxiliary transport device that relays the delivery of the harvested wheat straw to the feed chain from the holding transport mechanism of the wheat straw transporting device If this auxiliary transport device is configured so as to shift in synchronization with or substantially synchronized with the speed change of the vehicle speed together with the corn straw transport device, the posture from the standing posture to the sideways posture by the transport by the corn straw transport device The changed harvested cereals are kept constant or substantially constant with a relatively small speed difference from the culm conveying device by shifting the stockholder side in synchronization with or substantially in synchronization with the cereal conveying device. Although it is received by the auxiliary transport device, the transport posture is changed from a posture close to a sideways posture to a sideways posture, and then the stocker side may increase the speed difference depending on the vehicle speed. Conveying posture of cutting culms is to be passed to the feed chain from the same stable high lateral inclination set auxiliary transporting device to the position.

  In other words, at the delivery point of the harvested cereal rice cake, by avoiding simultaneous changes in the posture of the harvested cereal rice cake and a significant change in the conveyance speed, and suppressing the disturbance of the conveyance posture at the time of delivery of the harvested cereal rice cake, This makes it difficult to cause poor conveyance and dropout of the harvested cereal meal due to the disorder of the conveying posture.

  However, even when it is configured to deliver the harvested cereal rice cake from the pinch conveyance mechanism to the feed chain via the auxiliary conveyance device, the harvested cereal rice cake between the auxiliary conveyance device and the feed chain is used. In order to ensure delivery, the auxiliary conveying device is arranged in a state where its conveying terminal end overlaps with the conveying start end of the feed chain in the grain conveying direction. Depending on the speed of the vehicle, the auxiliary transport device and the feed chain, which may have a large speed difference, are transported on both ends, resulting in a disturbance in the transporting posture of the harvested cereals due to the speed difference.

Therefore, conventionally, a drop is provided between the auxiliary conveyance device and the conveyance start end of the feed chain, and the harvested cereal is dropped and supplied from the conveyance end of the auxiliary conveyance device to the conveyance start end of the feed chain. It was considered to prevent the straw from being transported on both sides by the auxiliary transport device and the feed chain, and to avoid the disturbance in the posture of the harvested cereal straw caused by the speed difference between the auxiliary transport device and the feed chain. (For example, refer to Patent Document 1).
Japanese Utility Model Publication No. 59-39867 (page 2, column 3, lines 15-30, FIG. 2, FIG. 8, FIG. 9)

  In the above configuration, the harvested cereal is dropped into the feed start end of the feed chain from the transport end of the auxiliary transport device and supplied, so that the transport posture of the harvested cereal is easily disturbed at the feed start end of the feed chain. This may lead to poor conveyance and dropout of the harvested cereal meal due to the disturbance.

  The purpose of the present invention is to prevent the misalignment of the posture of the harvested cereal mash due to both-end conveyance of the auxiliary transport device and the feed chain having a speed difference, The purpose is to prevent the disturbance and to avoid the poor conveyance and dropping off of the harvested cereals due to the disturbance of the conveying posture.

As means for solving the above-mentioned problems, the present invention comprises a holding and conveying mechanism for holding and conveying the stock base side of the harvested cereal rice bran, and an engaging and conveying mechanism for engaging and conveying the tip side of the harvested cereal rice cake. The harvested cereal is equipped with a cereal conveying device configured to convey the harvested cereal while changing the posture from the standing posture to the lying-down posture, and is held and conveyed in a lying-down posture by a vertically rotating feed chain. Equipped with a threshing device that receives the tip side of the cocoon from the receiving port and threshing it, and includes an auxiliary conveying device including a vertically rotating endless conveying chain, and holding the stock side of the harvested cereal rice cake by the auxiliary conveying device Combine harvester grain culm transport structure configured to deliver from the transport mechanism to the feed chain, a guide trough that guides the stock side of the harvested grain sorghum from the clamping transport mechanism to the auxiliary transport device, The auxiliary transport Together provided above the location, between the transport starting end of the feed chain and the transfer terminal end portion of the auxiliary transport device overlapping with cereal稈搬feeding direction, with for conveying the culms cutting by the feed chain is started And a separation guide that guides the harvested cereal meal so as to be separated from the auxiliary conveying device, and the endless conveyance chain at the position where the separation guide guides the stock side of the harvested grain meal by the guide fence. An inclination separation part having a larger inclination in the rear and upper direction than the transport locus is provided.

  According to this configuration, the harvested cereals are transferred from the pinch conveyance mechanism to the feed chain via the vertical rotation type auxiliary conveyance device. Therefore, the auxiliary conveyance device is synchronized with the speed change of the vehicle speed together with the culm conveyance device. If it is configured to shift synchronously, it is possible to avoid the change in the posture of the harvested cereal and the significant change in the conveyance speed at the delivery point of the harvested cereal, and the fact that they are performed at the same time. Disturbances in the transport posture of the harvested cereal grains can be suppressed.

  Since the separation guide is provided, when the harvested cereal rice cake is transferred from the holding conveyance mechanism to the feed chain, the harvested cereal meal produced by the auxiliary conveying device is started as the feed chain starts to be conveyed by the feed chain. This will end the transport.

  That is, even if it is not configured to provide a drop between the auxiliary conveyance device and the conveyance start end portion of the feed chain and drop and supply the harvested cereal from the auxiliary conveyance device to the conveyance start end portion of the feed chain, the auxiliary conveyance device and It is possible to prevent the harvested cereals from being carried on both ends by the feed chain.

  Therefore, by transferring the harvested cereal rice cake from the holding and conveying mechanism to the feed chain through the vertical auxiliary conveying device, the posture change of the harvested cereal rice cake and the transfer speed are greatly increased at the delivery location of the harvested cereal rice cake. In addition to preventing disruption of the transport posture of the harvested cereal meal due to simultaneous changes, the harvested grain meal can be transported on both sides by the auxiliary transport device and the feed chain, and the harvested cereal meal can be removed from the auxiliary transport device. It is possible to prevent disturbance of the conveying posture of the harvested cereal by dropping and supplying it to the conveyance start end of the feed chain, and as a result, it is possible to effectively avoid poor conveyance and dropping off of the harvested cereal caused by the disturbance of the conveying posture.

  As one of means for making the present invention more suitable, the separation guide is configured to have a pair of separation guide portions distributed and arranged on both lateral sides of the auxiliary transport device, and Among these separation guide portions, the height position of one separation guide portion provided on the threshing apparatus side is set to be lower than the height position of the other separation guide portion.

  According to this configuration, when the harvested cereal mash is transferred from the pinch transport mechanism to the feed chain, the pair of separation guide portions distributed and arranged on both lateral sides of the pinch transport mechanism causes the chopped cereal mash to be fed from the auxiliary transport device. It can be reliably separated.

  By the way, the harvested cereal rice bran sandwiched and conveyed by the feed chain is received at the tip side into the threshing device from the receiving port, and is rotated and driven by a cylindrical handling cylinder and a curved-shaped receiving portion disposed below the barrel. Since it is supplied to the net and receives the handling action of the handling cylinder, during conveyance by the feed chain, it is curved along the receiving net from the grain portion closer to the clamping position by the feed chain. It is desirable that the pair of separation guides are arranged at a predetermined interval in the longitudinal direction at a position closer to the receiving port than the feed chain by being distributed and arranged on both lateral sides of the holding and conveying mechanism. If the parts are set at the same height, the harvested cereal meal will be in a state in which the downward weight deformation of the stock-side portion guided by those separation guide parts is prevented by each separation guide part, So curved along the 受網 from grain 稈部 fraction away from the clamping position by the chain. Therefore, when the layer thickness of the harvested cereal mash is thick, the cereal portion on the side of the stock near the holding position by the feed chain is easily caught on the front wall of the threshing device, and the threshing device is received from the entrance of the threshing device. There is a risk of inconvenience that the introduction of the harvested cereal rice cake is not performed smoothly.

  Therefore, in the present invention, the height of one separation guide part deployed on the threshing device side is lower than the height position of the other separation guide part, It is designed to bend along the receiving net from the portion of the grain that is close to the clamping position by the feed chain.As a result, even if the layer thickness of the harvested grain is thick, the clamping position by the feed chain is It is possible to avoid the possibility that the cereal portion on the close side of the stock will be caught on the front wall of the threshing device, and to smoothly introduce the harvested cereal from the entrance of the threshing device into the threshing device.

  Therefore, it is possible to more surely avoid poor conveyance and dropout of the harvested cereal rice cake due to both ends being conveyed by the auxiliary conveying device and the feed chain, and from the threshing device receiving port to the threshing device. Smooth introduction of harvested cereals.

As one of means for making the present invention more suitable, a cover for covering the non-transport area of the auxiliary transport device from the lateral outer side is provided, and the top plate portion is provided on the cover .

When handling pillows, the auxiliary transport device and the top of the cover can be effectively used as a table for temporarily placing hand-grown cereals. As a result, even if a dedicated table is not equipped, Can be performed well.

  Therefore, the pillow handling work can be performed satisfactorily while simplifying the configuration and reducing the cost.

  FIG. 1 shows an overall side view of a combine. This combine is equipped with a pair of left and right crawler type traveling devices 2 on a body frame 1, and a planted cereal is harvested at the front of the body frame 1 and rearward. The chopping transport unit 3 that is transported toward the sway is connected so as to be able to swing up and down. The device 4 is mounted, and a grain tank 5 for storing the grain from the threshing device 4 is arranged at the right side of the threshing device 4 in the body frame 1, and at the right side of the cutting and conveying unit 3 in the body frame 1. The boarding operation unit 6 is formed.

  As shown in FIGS. 1 and 2, the cutting and conveying unit 3 includes a plurality of weeding tools 7 for weeding the planted cereals as the aircraft travels, and a plurality of triggers that cause the planted cereals after weeding. Device 8, clipper-shaped cutting device 9 that cuts the planted side of the planted cereal culm, a plurality of packers 10 that scrape and convey the stocked side of the chopped cereal pan backward, and the tip of the harvested cereal culm A plurality of scooping belts 11 that are scraped and transported with the side facing rearward, and transported toward the rear threshing device 4 while changing the posture from the standing posture to the lying-down posture while cutting and transporting The harvesting frame 13 is equipped with the cereal haul conveying device 12 and the like.

  As shown in FIGS. 1 and 3 to 5, the cutting frame 13 has a pair of left and right mounting tables 15 provided at the left and right ends of a lifting fulcrum frame portion 14 formed in a cylindrical shape facing left and right. And a lifting support fulcrum frame in the left-right direction by the operation of a hydraulic lift cylinder 17 that is supported between the frame 16 and the cutting frame 13. It swings up and down with the portion 14 as a fulcrum. That is, the cutting and conveying unit 3 can be swung up and down by the operation of the lift cylinder 17, and the cutting height can be adjusted by the up and down swing.

  As shown in FIGS. 3 to 5, each holder 16 swings over a support position for supporting the lift fulcrum frame portion 14 between the holder 16 and a release position for releasing the support of the lift fulcrum frame portion 14. The movable end can be operated, and the free end is fixed to the mounting table 15 with a bolt 18 and is held at the support position.

  As shown in FIG. 1, the lift cylinder 17 is configured so that one end of the lift cylinder 17 can be easily connected to and disconnected from the cutting frame 13 by operating a connecting pin 19.

  As shown in FIGS. 1, 2, and 6, the threshing device 4 receives the tip side of the harvested cereal rice cake whose posture has been changed to the sideways posture from the receiving port 21 formed in the front wall 20, and A stock-feed side of the harvested cereal rice cake whose posture has been changed to the sideways posture, a vertically rotating feed chain 22 composed of an endless rotating chain with a conveying protrusion disposed on the left side thereof, and nipping and conveying the feed chain 22 It is sandwiched between sandwiching rails 23 arranged opposite to the region, and is conveyed backward by driving the feed chain 22, and the cylindrical handling cylinder 24 and the curved shape disposed below the carrier are conveyed by the transportation. A threshing process is performed by rotating the handle cylinder 24 on the tip side of the harvested grain culm guided between the receiving net 25 and the processed product obtained by the threshing process. Sieving by swinging drive of A sorting process such as wind sorting by sorting wind generated by the rotation drive of the cocoon 27 is performed, and the single grain obtained by the sorting process is collected, supplied to the grain tank 5 and transported to a single grain. The grains and the like are collected and subjected to a single grain process, and then reduced and conveyed to the swing sorting plate 26, and dust such as straw scraps is discharged outside the apparatus.

  The receiving network 25 is a concave receiving network formed in a lattice shape. The clamping rail 23 is urged toward the feed chain 22 by a push spring (not shown) so as to obtain an appropriate clamping force with the feed chain 22.

  As shown in FIG. 6, this combine transmits power from the engine 28 to the hydrostatic continuously variable transmission 29, and the power after shifting by the hydrostatic continuously variable transmission 29 is built in the mission case 30. This is transmitted to the left and right crawler type traveling devices 2 via a traveling transmission system (not shown), and the power after shifting by the hydrostatic continuously variable transmission 29 is transmitted to the cutting and conveying unit 3 by a belt tension type cutting clutch 31. The power from the engine 29 is transmitted to the threshing device 4 via a belt tension type threshing clutch 32.

  The cutting and conveying unit 3 is configured to distribute and supply the power transmitted through the cutting clutch 31 to the pulling device 8 and the cutting device 9 through the first work transmission system 33 built in the cutting frame 13. In addition, the threshing device 4 is configured to distribute and supply the power transmitted via the threshing clutch 32 to the feed chain 22 and the handling cylinder 24 via the second work transmission system 34.

  From the above configuration, the driving speed of the culm transporting device 12 and the like in the chopping transport unit 3 is shifted in synchronism with the speed change of the vehicle speed by the hydrostatic continuously variable transmission 29, whereby the chopping transport unit In the cereal haul conveying device 12, regardless of the amount of harvested crops per unit time that increases or decreases in proportion to the change in vehicle speed, the harvested cereal haul can be conveyed in series at an appropriate layer thickness. Conveyance of harvested cereals due to a significant drop in the amount of cereals and clogging of harvested cereals caused by a significant increase in the amount of cereals to be conveyed are less likely to occur. Therefore, the grain haul conveyance performance in the grain haul transport device 12 is improved. Regardless of the vehicle speed shift by the hydrostatic continuously variable transmission 29, the feed chain 22 and the handling cylinder 24 of the threshing device 4 can be driven at a constant speed suitable for performing the threshing process. As a result, high threshing performance can be secured.

  As shown in FIGS. 1 to 3, the culm transporting device 12 latches and transports the tip side of the harvested cereal cocoon, which is located above the clamping transport mechanism 35 that sandwiches and transports the stock side of the chopped cereal. The holding and conveying mechanism 36, and the holding and conveying mechanism 35 is opposed to the holding and conveying regions of the first endless conveying chain 37 with conveying protrusions disposed at the left and right and right and left centers, and the corresponding first endless conveying chain 37. The first holding rod 38 deployed, the second endless transport chain 39 with transport protrusions deployed in a state extending from the transport terminal end of the first endless transport chain 37 on the right side toward the upper left rear, the second A second clamping rod 40 disposed opposite to the clamping conveyance region of the endless conveyance chain 39, and a third endless conveyance with a conveyance protrusion arranged in a state extending rearward from the conveyance terminal portion of the second endless conveyance chain 39. Chain 41 and its The third endless transport chain 41 is configured to include a third sandwiching rod 42 disposed opposite to the sandwiched transport region, and each packer 10 is driven on the transport start end side by driving the endless transport chains 37, 39, 41. The stock side of the harvested cereal rice cake that has been squeezed and transported in between is sandwiched between the left and right first endless transport chains 37 and the first sandwiching rod 38, and gathered and transported toward the rear left and right central side, At the transport end side, the stock side of the harvested cereal grains that have been collected and transported is sandwiched between the second endless transport chain 39 and the second sandwiching shear 40 and transported toward the upper left rear, The stocker side of the harvested cereal rice cake conveyed to the rear upper side is sandwiched between the third endless conveying chain 41 and the third clamping rod 42 and conveyed toward the rear feed chain 22.

  It should be noted that each of the first to third clamping rods 38, 40, 42 is not shown in the drawing so that an appropriate clamping force can be obtained between the corresponding first to third endless transport chains 37, 39, 41. It is urged | biased toward each 1st-3rd endless conveyance chains 37,39,41 corresponding by a press spring.

  As shown in FIGS. 1 to 10, between the third endless conveyance chain 41 serving as the conveyance end portion of the nipping conveyance mechanism 35 and the conveyance start end portion of the feed chain 22, the third endless conveyance chain 41 is fed to the feed chain 22. A vertical rotation type auxiliary transport device 43 that relays the delivery of the harvested cereal rice cake on the stock source side is equipped.

  The auxiliary conveyance device 43 includes a front driven roller 44 disposed on the left side of the conveyance end of the third endless conveyance chain 41, a rear driven roller 45 disposed on the right side of the conveyance start end of the feed chain 22, and a rear driven roller 45. A drive sprocket 46 disposed below, a tension roller 47 disposed between the front driven roller 45 and the drive sprocket 46, and an endless transport chain 48 with a transport protrusion that hangs over them, and the like. The transport end of the endless transport chain 48 overlaps the transport end of the third endless transport chain 41 in the grain transporting direction, and the transport end of the endless transport chain 48 is the transport start of the feed chain 22. Of the feed chain 22 and the transport locus K1 in the transport region, The first support plate 49, the second support plate 50, and the like that are fixedly mounted on the machine frame 1 via the mounting table 15 or the like so that the transport locus K2 on the sending start side is positioned substantially in a straight line. Is supported through.

  The transport path K1 of the auxiliary transport device 43 is formed by the tip of the transport protrusion 51 when the endless transport chain 48 is driven, and the transport path K2 of the feed chain 22 is transported when the feed chain 22 is driven. It is formed by the tip of the protrusion 52.

  The drive sprocket 46 of the auxiliary conveyance device 46 is connected to the first output shaft 53 of the first work transmission system 33 extending leftward from the lifting fulcrum frame portion 14 of the cutting frame 13 on the left side of the auxiliary conveyance device 43. The chain-type transmission mechanism 54 disposed adjacent to the side and the gear-type transmission mechanism 55 disposed adjacent to the left lateral side of the chain-type transmission mechanism 54 are coupled together.

  That is, the driving speed of the auxiliary transport device 43 is also shifted in synchronization with the shift of the vehicle speed by the hydrostatic continuously variable transmission 29 together with the culm transport device 12 of the harvesting transport unit 3 and the like.

  The auxiliary conveying device 43 is driven at a constant speed A at a predetermined speed A regardless of the change in the vehicle speed, while the endless conveying chain 48 has a vehicle speed within the range of speed 0 to B. The cereal conveyance device 12 is configured so that the third endless conveyance chain 41 of the pinch conveyance mechanism 35 is synchronized with the speed change of the vehicle speed in the range of speed 0 to C. The relationship between the driving speeds A (constant speed), B (fastest speed), and C (fastest speed) is A <B≈C, and the speed difference between the speed B and the speed C is 1%. It is set to be within.

  Incidentally, the relationship between the driving speeds A (constant speed), B (fastest speed), and C (fastest speed) may be set so that A <B <C or A <B = C. Good. Even when the relationship between the drive speeds A, B, and C is set to A <B <C, the drive speed B (fastest) of the endless transport chain 48 and the drive speed C (fastest) of the third endless transport chain 41 are It is desirable to reduce the difference.

  As the feed chain 22 starts transporting the harvested cereals, the harvesting is performed between the transport terminal end of the auxiliary transport device 43 and the feed start end of the feed chain 22 that overlap in the transport direction of the harvested cereal. A separation guide 56 is provided for guiding the cereal stock side to be separated from the endless conveyance chain 48 of the auxiliary conveyance device 43.

The separation guide 56 is formed in a shape having a pair of separation guide portions 56 </ b> A and 56 </ b> B distributed and arranged on the left and right side portions of the endless transport chain 48, and is fixed to the second support plate 50. The left and right separation guide portions 56A and 56B have their first half portions a1 and b1 (corresponding to the inclined separation portion) scooped up the stock side of the harvested cereal rice cake that has been transported by the feed chain 22 from the endless transport chain 48. The rear half parts a2 and b2 are separated from the feed chain 22 from the feed chain 22 with the handling cylinder 24 so that they become separation guide areas that are separated and guided along the conveying direction of the feed chain 22. It is configured to be a posture change guide area that guides while changing the posture to a downwardly inclined posture toward the net 25. Therefore, the left and right separation guide portions 56A and 56B are configured so that their front half portions a1 and b1 are transported at the transport start end portion of the feed chain 22 suitable for guiding the harvested cereals transported by the feed chain 22. In the latter half portions a2 and b2, the gradient of the right separation guide portion 56B with respect to the left separation guide portion 56A is set. The lower the lower side of the grain conveying direction, the height position of the right separation guide part 56B on the threshing device side becomes lower than the height position of the left separation guide part 56A, The connecting line L is set so as to have a downwardly inclined posture substantially along the lower edge of the receiving port 21 within the receiving width of the receiving port 21.

  From the above configuration, when the harvested cereals conveyed while changing the posture from the standing posture to the lying-down posture by the cereal conveying device 12 are supplied to the threshing device 4, first, the culm conveying device 12 is sandwiched. The stable stock base side of the harvested cereal mash held and transported by the transport mechanism 35 is supported at two points by the third endless transport chain 41 of the sandwich transport mechanism 35 and the endless transport chain 48 of the auxiliary transport device 43 with almost no speed difference. Clamping while slightly changing the posture of the harvested cereals from the posture close to the overturn obtained by conveyance by the cereal conveyance device 12 to the sideways posture suitable for the supply to the threshing device 4 Although the speed difference may be larger than that between the auxiliary conveyance device 43 and the holding conveyance mechanism 35 from the auxiliary conveyance device 43, the conveyance posture of the harvested cereal meal is the same. Posture (threshing It will be passed to the feed chain 22 which is set to a higher lateral falling posture) of suitable stability to feed the location 4.

  In short, when it is configured to directly deliver the harvested cereal mash from the pinching and conveying mechanism 35 of the cereal conveying device 12 to the feed chain 22, the posture close to the lateral fall by the cereal conveying device 12 at the delivery location. Change in the posture of the harvested cereal rice cake to a sideways posture suitable for supply to the threshing device 4 and a significant change in the conveying speed may be performed at the same time. The transport posture is likely to be disturbed, and it is easy to cause a transport failure or dropout due to the disorder of the transport posture. However, if the auxiliary transport device 43 is provided as described above, the harvested cereal at the delivery point of the harvested cereal culm. It is possible to avoid simultaneously changing the posture of the cocoon and changing the conveyance speed at the same time, and as a result, it is possible to suppress the disorder of the conveyance posture of the harvested cereal at the delivery point.

  In addition, the third endless transport chain of the sandwiching and transporting mechanism 35 having almost no speed difference when delivering the harvested sorghum to the auxiliary transporting device 43 from the sandwiching and transporting mechanism 35 of the grain and shelling transporting device 12 in which the posture of the harvested mashing culm is changed. 41 and the endless transport chain 48 of the auxiliary transport device 43 are in a highly stable state supported by two points, so that it is effective that the transport posture of the harvested cereal cocoon is disturbed due to the change in the posture of the harvested culm Can be suppressed.

  Further, between the auxiliary conveying device 43 and the feed chain 22 where the speed difference may be relatively large, the feeding guide 22 starts to convey the harvested cereal meal, and at the same time, the separation guide 56 has the harvested grain meal. Is separated from the endless transport chain 48 of the auxiliary transport device 43 and the transport of the harvested cereal meal by the auxiliary transport device 43 is terminated. Thus, the auxiliary transport device 43 and the feed chain 22 Disturbances in the conveying posture of the harvested cereal rice cake can be reliably avoided.

  In addition, in order to avoid disturbance in the conveying posture of the harvested cereal, instead of providing a drop between the auxiliary conveying device 43 and the feed chain 22, the conveying trajectory K1 and the feed chain in the conveying region of the auxiliary conveying device 43 are provided. Since the transport trajectory K2 at the transport start end portion 25 is positioned on a substantially straight line, it is possible to avoid disturbance in the transport posture of the harvested culm caused by the drop, and to harvest the cereal from the auxiliary transport device 43 to the feed chain 22 It is possible to smoothly and beautifully deliver and transport cocoons.

  In addition, the relationship between the drive speeds of the third endless transport chain 41 of the clamping transport mechanism 35 and the endless transport chain 48 of the auxiliary transport device 43 and the feed chain 22 is determined as the fastest state of the third endless transport chain 41 and the endless transport chain 48. The feed chain 22 is driven at a speed within the shifting range of the third endless transport chain 41 and the endless transport chain 48 by making their drive speeds higher than the drive speed of the feed chain 22. The speed difference between the endless transport chain 48 and the feed chain 22 where the harvested cereals are delivered can be reduced, and the disturbance in the transport posture of the harvested cereals due to the speed difference can be suppressed.

  In addition, the rear half portions a2 and b2 of the separation guide portions 56A and 56B in the separation guide 56 are used as posture change guide regions, and the stock side of the harvested cereal grains conveyed at the conveyance start end portion of the feed chain 22 from the feed chain 22 Since the posture is changed to a right-downward slanting posture that goes between the handling cylinder 24 and the receiving net 25, the harvested cereal meal is at the holding position by the feed chain 22 at the stock start side at the conveyance start end of the feed chain 22. As a result, it comes to curve along the receiving net 25 from the closer grain portion, and as a result, even when the layer thickness of the harvested grain straw is thick, the grain on the stock side near the holding position by the feed chain 22 It is possible to avoid the possibility that the cocoon part is caught on the front wall 20 of the threshing device 4, and to smoothly introduce the harvested cereal culm from the receiving port 21 of the threshing device 4 into the threshing device 4.

  In other words, the supply conveyance that conveys the harvested cereal rice cake toward the threshing device 4 while changing the posture from the standing posture to the sideways posture, It can be done smoothly and beautifully while being difficult to invite effectively.

  As shown in FIGS. 1, 2, and 6 to 8, the threshing device 4 is equipped with a cover 57 that covers the non-conveying region of the feed chain 22 from the lateral outer side so that it can be easily attached and detached. It is extended and formed in a state having an extending portion 57A extending toward the upper side in the grain conveying direction from the conveying start end of the chain 22, and the extending portion 57A allows the non-conveying region of the auxiliary conveying device 43 to be laterally outward. It comes to cover from the side. The extending portion 57 </ b> A is provided with a top plate portion 57 a that hides the gap between the upper end edge and the auxiliary transport device 43.

  In this way, by providing the cover 57 with the extending portion 57A that covers the non-conveying region of the auxiliary conveying device 43 from the lateral outer side, in order to manually supply the hand-harvested cereal meal to the threshing device 4, the harvesting conveyance During the pillow handling operation in which the driving of the threshing device 4 is stopped while the driving of the threshing device 4 is stopped, the endless transport chain 48 of the auxiliary transporting device 43 and the extending portion 57A of the cover 57 that are stopped when the cutting transporting unit 3 is stopped. The hand-crop cereal rice cake can be temporarily placed in the state where it has been passed to.

  In other words, the cover 57 of the feed chain 22 can be used as the cover of the auxiliary transport device 43 and can be effectively used for a mounting table for temporarily placing the hand-harvested cereal with the endless transport chain 48 of the auxiliary transport device 43. As a result, the structure can be simplified and the cost can be reduced, and the pillow handling work can be performed well.

  As shown in FIGS. 3 to 7 and FIG. 10, the chain transmission mechanism 54 includes a first sprocket 58 that rotates integrally with the first output shaft 53, a second sprocket 59 disposed behind the first sprocket 58, and the sprockets 58. , 59, and the like, and the first sprocket 58 is fixed to the first output shaft 53 with a nut 61.

  The gear transmission mechanism 55 is engaged with the first gear 63 that rotates together with the second sprocket 59 of the chain transmission mechanism 54 via the first transmission shaft 62, meshes with the first gear 63 and via the second transmission shaft 64. The second gear 65 that rotates integrally with the drive sprocket 46 of the auxiliary transport device 43, the gear case 66 that surrounds the gears 63, 65, and the like are configured.

  With the above configuration, when removing the cutting and conveying unit 3 from the machine body frame 1, first, the first sprocket 58 together with the nut 61 that fixes the first sprocket 58 of the chain transmission mechanism 54 to the first output shaft 53 is set to the first. After removing from the output shaft 53 and then releasing the connection between the cutting frame 13 and the lift cylinder 17 by the connecting pin 19, the fixing of the holder 16 to the left and right mounting table 15 by each bolt 18 may be released. Equipped with an auxiliary conveying device 43 between the chopping and conveying unit 3 and the threshing device 4 to improve the delivery of the chopped cereal to the feed chain 22 from the pinching and conveying mechanism 35 of the cereal conveying device 12 only by performing an operation. The cutting and conveying unit 3 can be easily detached from the machine body frame 1, and between the cutting and conveying unit 3 and the threshing device 4 or the cutting and conveying unit 3. Easily maintenance such as deployed transmission system and the operation system between the driver's section 6.

  Further, the auxiliary conveying device 43 is driven by the power through the first work transmission system 33 of the cutting and conveying unit 3 so that the auxiliary conveying device 43 and the cutting and conveying unit 3 are synchronized with the shift of the vehicle speed by the hydrostatic continuously variable transmission 29. Although it is configured to be shifted, it can be left on the threshing device 4 side when removing the cutting and conveying unit 3 from the machine body frame 1. It is also easy to align the auxiliary transport device 43 and the feed chain 22 in FIG.

  As shown in FIG. 2, the locking and conveying mechanism 36 of the culm conveying device 12 is provided in a state of extending from above the scraping belt 11 provided at the right end to the vicinity of the receiving port 21 of the threshing device 4. A right side locking conveyance band 67, a central side locking conveyance band 68 arranged in a state extending from the upper side of the scraping belt 11 arranged in the right and left center toward an intermediate portion of the right side locking conveyance band 67, and Each of the locking and conveying belts is configured to include a left-side locking and conveying belt 69 provided in a state of extending from the upper side of the scraping belt 11 provided at the right end toward an intermediate portion of the right-side locking and conveying belt 67. When the belts 67 to 69 are driven, on the transport start end side, the respective latch transport belts 67 to 69 corresponding to the tip side of the harvested cereal rice cake that has been scraped and transported by the respective scraper belts 11 are locked, and the left and right sides of the rear It is scraped and transported toward the center side, and it is scraped and transported at the transport end side. The rear end side of the right side locking transport band 67 is locked to the head side of the harvested cereal culm, and the rear threshing device 4 is received while gradually displacing the tip side from the upper side of the cereal transporter 12 to the right side. Transport toward the inlet 21.

  Each of the latching transport bands 67 to 69 is configured by arranging a plurality of latching claws 71 in parallel with the endless rotating chain 70 at a predetermined interval.

  Reference numerals 72 shown in FIGS. 7 to 10 are first guide rods that guide the stock side of the harvested cereal culm from the pinch transport mechanism 35 to the auxiliary transport device 43, from the chopping frame 13 toward the endless transport chain 48. It is made of a round steel material extended so as to swing up and down, and its extended end side is received and supported by an endless conveying chain 48 of the auxiliary conveying device 43. Reference numerals 73 shown in FIGS. 7 to 10 are second guide rods for guiding the stock side of the harvested cereal rice cake to the feed chain 22 from the pinching and transporting mechanism 35, and swinging up and down from the harvesting frame 13 toward the feed chain 22. It consists of a round steel material extended so that movement is possible, and the extension end side is received and supported by the feed chain 22.

[Another Example]
Other embodiments of the present invention will be listed below.
[1] As a combine, for example, a belt-type continuously variable transmission may be provided instead of the hydrostatic continuously variable transmission 29.

[2] As a combine, the cutting and conveying unit 3 is connected to the machine body frame 1 so as to be able to swing left and right over a work position located in front of the threshing device 4 and a maintenance position that deviates laterally from the work position. You may do.

[3] The auxiliary conveyance device 43 may be configured to be shifted in synchronism with the shift of the vehicle speed together with the reaping device 9 and the cereal conveyance device 12 of the reaping conveyance unit 3. For example, when the vehicle speed is within a predetermined very low speed region, the auxiliary transfer device 43 is fixed at a predetermined low speed regardless of the speed change of the vehicle, together with the cutting device 9 of the cutting transfer unit 3 and the culm transfer device 12. When driven and the vehicle speed exceeds a predetermined very low speed range, the cutting speed can be adjusted in synchronization with the speed change of the vehicle speed together with the cutting device 9 and the grain feeder 12 of the cutting conveyance unit 3. A cutting failure or a conveyance failure that may be caused due to an excessively low speed together with the harvesting device 9 or the cereal conveyance device 12 of the conveyance unit 3 can be avoided. Further, when the vehicle speed is equal to or lower than a predetermined high speed, the auxiliary transfer device 43 is shifted in synchronism with the shift of the vehicle speed together with the cutting device 9 of the cutting transfer unit 3 and the culm transfer device 12, and the vehicle speed is set to a predetermined value. If it is configured to be driven at a constant high speed at a predetermined high speed regardless of the speed change of the vehicle together with the harvesting device 9 of the harvesting conveyance unit 3 or the culm conveyance device 12 when exceeding the high speed, the harvesting of the harvesting conveyance unit 3 It is possible to avoid the generation of intense noise that may be caused by the excessive speed at the same time as the apparatus 9 and the grain feeder 12.

[4] The conveyance locus K1 in the conveyance region of the auxiliary conveyance device 43 and the conveyance locus K2 on the conveyance start end side of the feed chain 22 may be arranged on a straight line.

[5] The separation guide 56 may be configured to have only the left separation guide portion 56A or the right separation guide portion 56B.

[6] The separation guide 56 is formed such that the height position of the right separation guide portion 56B on the threshing device side is lower than the front half portions a1 and b1 of the left separation guide portion 56A. May be.

[7] A dedicated cover that covers the non-transport area of the auxiliary transport device 43 from the lateral outer side may be separately provided.

Combine side view Schematic plan view of the cutting and conveying section Longitudinal front view of the main part showing the support structure of the harvesting transport unit and the delivery structure of the harvested cereal meal Longitudinal side view of the main part showing the support structure of the harvesting transport section and the delivery structure of the harvested cereal meal Longitudinal side view of the main part showing the state where the cutting and conveying section is removed Schematic diagram of transmission system Cross-sectional plan view of the main part showing the delivery structure Longitudinal side view of the main part showing the delivery structure Side view of the main part showing the configuration of the separation guide Longitudinal front view of the main part showing the configuration and operation of the separation guide

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Cutting and conveying part 4 Threshing apparatus 12 Grain trough conveying apparatus 21 Receiving port 22 Feed chain 35 Holding conveyance mechanism 36 Locking conveying mechanism 43 Auxiliary conveying apparatus 56 Separation guide 56A Separation guide part 56B Separation guide part Threshing apparatus side 57 Cover
a1 first half (inclined separation part)
b1 first half (inclined separation part)

Claims (3)

Equipped with a nipping and conveying mechanism for nipping and conveying the stock side of the harvested cereal rice cake, and a locking and conveying mechanism for engaging and conveying the tip side of the harvested cereal rice cake, and the posture of the harvested cereal rice cake from the standing posture to the sideways posture A threshing device that is equipped with a grain culm conveying device configured to convey while changing, and that accepts the tip side of the harvested cereal culm that is nipped and conveyed by a vertically rotating feed chain from the receiving port and threshing it Is provided, and includes an auxiliary conveying device including a vertically rotating endless conveying chain, and the auxiliary conveying device is configured to deliver the stock base side of the harvested cereal rice cake from the holding conveying mechanism to the feed chain. A harvested cereal conveying structure for a combine,
While providing a guide ridge that guides the stock side of the harvested cereal culm from the clamping transport mechanism to the auxiliary transport device, on the upper side of the auxiliary transport device
As the feeding of the harvested cereal by the feed chain is started between the conveying terminal end of the auxiliary conveying device and the feed starting end of the feed chain that overlap in the cereal conveying direction, Equipped with a separation guide that guides to be separated from the auxiliary transport device ,
The harvesting cereal conveyance of the combine, wherein the separation guide is provided with an inclined separation part whose inclination to the rear and upper is larger than the conveyance trajectory of the endless conveyance chain at the position where the stocker side of the harvested cereal culm is guided by the guide trough Construction.   The separation guide is configured to have a pair of separation guide portions distributed and arranged on both lateral sides of the auxiliary conveyance device, and one of the separation guide portions is arranged on the threshing device side. The combine harvester cereal conveyance structure according to claim 1, wherein the height position of the guide portion is set to be lower than the height position of the other separation guide portion. The combine harvesting cereal conveyance structure of the combine of Claim 1 or 2 provided with the cover which covers the non-conveyance area | region of the said auxiliary conveyance apparatus from the lateral outer side , and the said cover is provided with the top-plate part .

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