JP4101157B2 - Combine harvester grain transport structure - Google Patents

Description

  The present invention provides a cutting frame conveying unit provided with a culm conveying device for conveying a chopped culm while changing its posture from a standing posture to a sideways posture on a machine frame equipped with a threshing device, in front of the threshing device. The present invention relates to a harvested cereal conveying structure for a combine that is connected so as to be able to swing left and right over a work position that is positioned and a maintenance position that is deviated laterally outward from the work position.

  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 corn straw transporting structure of the combine, the speed change of the vehicle speed is performed together with the corn straw transporting device by being driven by the power from the corn straw transporting device between the pinch transport mechanism and the feed chain of the corn straw transporting device. Equipped with a vertical rotation type auxiliary transport device that is shifted in synchronization with While the posture of the harvested cereal cocoon changed to a position close to the posture is changed from a posture close to lying down to a sideways posture, the stocker side of the chopped cereal cocoon must be shifted in synchronization with the corn straw conveying device. In this case, the speed difference from the cereal conveying apparatus is transferred to an auxiliary conveying apparatus that is kept constant in a relatively small state, and thereafter, the speed difference may be larger than the cereal conveying apparatus from the auxiliary conveying apparatus. Therefore, the posture of the harvested cereals and the speed of conveyance are changed at the delivery point of the harvested cereals by configuring it so that it is delivered to the feed chain set to the same stable sideways posture. There is one that suppresses the disturbance of the conveyance posture due to simultaneous significant changes in the size and makes it difficult to cause the conveyance failure and dropout of the harvested cereal culm due to the disturbance of the conveyance posture (see, for example, Patent Document 1). .

On the other hand, in the harvested cereal conveyance structure of the combine that equips the harvesting conveyance part so as to be able to swing left and right, it is not equipped with the above-described vertical rotation type auxiliary conveyance device, and the tumbling conveyance device closes to a sideways posture. The stockholder side of the harvested cereal meal whose posture has been changed is configured to be directly transferred from the pinch conveyance mechanism of the cereal meal conveyance device to the vertically rotating feed chain (see, for example, Patent Document 2).
Japanese Utility Model Publication No. 59-39867 (page 3, column 5, line 1 to line 5, page 3, column 5, line 31 to column 6, line 17, FIG. 2, FIG. 8, FIG. 9) Fig. 11) Japanese Patent Laid-Open No. 2002-95335 (paragraph numbers 0014 and 0017, FIGS. 1-3)

  In the harvested cereal haul conveying structure of the combine that equips the mowing and conveying part so as to be able to swing left and right, a vertical rotation type auxiliary conveying device is provided between the holding conveying mechanism of the corn haul conveying device and the feed chain, and this auxiliary conveying device However, when driving with the power from the grain feeder so that it is shifted in synchronization with the speed change of the vehicle speed together with the grain feeder, this auxiliary carrier device is placed behind the swing fulcrum of the harvesting carrier. It is conceivable to equip the cutting and conveying unit so as to extend toward the feed chain that is positioned, and to swing left and right integrally with the cutting and conveying unit, but in this case, between the cutting and conveying unit and the threshing device In addition, it is necessary to provide a space for allowing the auxiliary conveying device extending toward the feed chain to swing left and right. Effect will suffer from placement of various devices in order to avoid.

  The object of the present invention is to equip the harvesting and transporting part so that it can be swung left and right, but the overall length of the combine is increased, which adversely affects the turning performance, etc. Without causing any inconvenience such as, cutting at the delivery point of the harvested cereal, and the change in the posture of the harvested cereal and the significant change in the conveying speed are performed at the same time, resulting in disruption of the transported posture of the harvested cereal It is intended to make it difficult for the cereals to be transported and dropped.

As means for solving the above-described problems, the present invention includes a culm transporting device that transports a mowing cereal while changing its posture from a standing posture to a lying-down posture on a machine frame equipped with a threshing device. In the harvesting cereal conveying structure of the combine, the cutting and conveying unit is connected to the working position located in front of the threshing device and the maintenance position removed from the working position laterally outward of the machine body so as to be able to swing left and right. A feed chain of the vertical rotation type in which the stocker side of the harvested cereal grains whose posture has been changed by the cereal grain conveying device to a position close to its side position is disposed from the holding conveyance mechanism of the cereal conveying apparatus to the lateral outer side of the threshing device. A vertical rotation type auxiliary conveyance device is provided, and the auxiliary conveyance device is fixedly installed on the machine body frame side, and the power transmitted from the cutting conveyance unit via the auxiliary transmission device Dynamic and, the auxiliary transmission device, wherein the first rotating member to which power from the reaper transport unit mounted on the conveying side Reaper is input, the power from the attached to the body frame side the reaping transport unit a second rotary member for outputting to the auxiliary transporting device, the a first rotation member and the second rotary member and the endless transmission belt hung turned over, and configured to include a tension mechanism for tensioning the endless transmission belt is there.

  According to this configuration, since the auxiliary conveying device is driven by the power from the cutting and conveying unit, the auxiliary conveying device can be shifted in synchronization with or substantially in synchronization with the shift of the vehicle speed together with the grain conveying device of the cutting and conveying unit. Become.

  Thus, for example, if the auxiliary conveying device is configured to shift in synchronization with the speed change of the vehicle speed together with the culm conveying device, the stocker side of the harvested cereal culm is delivered from the pinch conveying mechanism of the cereal conveying device to the feed chain. First, the cutting posture of the harvested cereals whose posture has been changed from the standing posture to the near-falling posture by the conveyance by the cereal-conveying device is changed from the posture close to the lying-down posture to the lying-down posture. The strainer side of the cereal is transferred to the auxiliary transport device that is kept constant in a relatively small speed difference from the cereal transport device by shifting in synchronization with the cereal transport device, and then Although the speed difference may be larger than that of the grain feeder, the auxiliary conveying device is transferred to the feed chain in which the conveying posture of the harvested wheat straw is set to the same stable sideways posture.

  In other words, it is possible to avoid simultaneous changes in the posture of the harvested corn straw and a significant change in the conveyance speed at the delivery point of the harvested corn straw, and suppress disturbances in the conveying posture of the harvested corn straw due to these being performed simultaneously. This makes it difficult to cause poor conveyance or dropping off of the harvested cereal meal due to the disorder of the conveying posture.

  The endless transmission band can be removed from the first rotating body by loosening the tension of the endless transmission band using a tension mechanism, and the auxiliary transmission device can be swung left and right in this state. Only the first rotating body swings left and right together with the cutting and conveying section, and the auxiliary conveying device remains on the machine body frame side together with the second rotating body and the endless transmission band of the auxiliary transmission device.

  In other words, the left and right swinging of the auxiliary transport device and the auxiliary transmission device between the harvesting transport unit and the threshing device is necessary when the auxiliary transport device is swung left and right integrally with the harvesting transport unit together with the auxiliary transmission device and the like. In order to avoid the decrease in turning performance and the like due to the increase in the overall length of the combine due to the provision of the space, and the reduction in the performance. It is possible to avoid such a thing that it is difficult to arrange.

  In addition, the auxiliary conveying device is shifted in synchronization with the speed change of the vehicle speed together with the grain conveying device, and the threshing device is driven at a constant speed at a predetermined speed, so that the speed difference between the auxiliary conveying device and the feed chain is greatly increased depending on the vehicle speed. Even if it becomes, it becomes easier to align the auxiliary transport device and the feed chain, which may increase the speed difference, by fixing the auxiliary transport device to the machine body frame side where the threshing device is mounted. As a result, for example, in order to suppress the disturbance of the conveying posture of the harvested culm due to the speed difference, the conveying terminal position of the auxiliary conveying device and the conveying start end position of the feed chain are matched in the cereal conveying direction and the height direction, etc. It becomes easy to deal with.

  Therefore, while improving the maintainability by installing the cutting and transporting part so as to be able to swing left and right, the overall length of the combine becomes longer and adversely affects the turning performance, etc. Without inconvenience such as difficulty in placement, at the delivery point of the harvested cereal mash, the posture change of the harvested cereal mash and the significant change in the transport speed are performed at the same time. It is possible to make it difficult to drop off, and furthermore, it is possible to easily suppress the disorder of the conveying posture of the harvested cereal rice cake due to the speed difference between the auxiliary conveying device and the feed chain. And dropouts are difficult to invite.

  As one of means for making the present invention more suitable, the auxiliary transmission device is arranged on the laterally outer side of the machine body relative to the auxiliary conveyance device.

  According to this configuration, the endless transmission band using the tension mechanism can be easily detached from the first rotating body, and the cutting and conveying unit can be easily swung left and right.

  Accordingly, it is possible to improve workability when performing maintenance by swinging the cutting and conveying section left and right.

  FIG. 1 shows the entire side surface of the combine, and FIGS. 2 and 3 show the entire plane of the combine. The combine is equipped with a pair of left and right crawler type traveling devices 2 on the body frame 1, and the body frame 1 Is connected to a front part of the cutting and transporting portion 3 for cutting and transferring the planted cereals to the rear so as to be able to swing up and down and swing left and right. A grain tank that receives the harvested cereal from the transport unit 3 and performs threshing / sorting processing, and stores the grain from the threshing device 4 at the right side of the threshing device 4 in the machine frame 1. 5 is provided, and a boarding operation unit 6 is formed at a right side position of the cutting and conveying unit 3 in the machine body frame 1.

  As shown in FIGS. 1 to 5, the cutting and conveying unit 3 includes a plurality of weeding tools 7 for weeding the planted cereal as the machine travels, and a plurality of pulling devices that cause the planted cereal after weeding. 8. Clipper-shaped cutting device 9 for cutting the planted side of the planted cereal culm, a plurality of packers 10 that stirs and conveys the planted side of the chopped cereal back, and the tip side of the harvested cereal culm A plurality of the scooping belts 11 that are scraped and conveyed toward the rear, and the chopped cereals that have been scraped and conveyed are conveyed toward the rear threshing device 4 while changing the posture from the standing posture to the sideways posture. The harvesting frame 13 is equipped with the grain culm transport device 12 and the like.

  As shown in FIGS. 1 to 3 and FIGS. 6 to 13, the cutting frame 13 has a left end portion of a lifting fulcrum frame portion 14 formed in a left-right cylindrical shape, and an upper end of a column 15 erected on the body frame 1. And the right end portion of the lifting fulcrum frame portion 14 is rotatably supported between a mounting table 16 mounted on the body frame 1 and a holder 17 provided on the mounting table 16. Then, the hydraulic lift cylinder 18 installed over the machine body frame 1 and the cutting frame 13 is actuated to swing up and down with the lifting and lowering fulcrum frame portion 14 as a fulcrum. That is, the cutting and conveying section 3 can be swung up and down by the operation of the lift cylinder 18, and the height of cutting can be adjusted by the up and down swing.

  6-10, the support | pillar 15 is standingly arranged in the left front end part of the body frame 1 in the state which can be rotated to the surroundings of the shaft center, and when carrying out the rocking | fluctuation conveyance part 3 right-and-left swing operation A fulcrum. At the upper part of the support column 15, a retreat position (see FIG. 10 (b)) where the lowering swing of the cutting frame 13 is not restricted by the turning operation of the operation unit 19 arranged on the left side, and the lowering of the cutting frame 13. A lowering restricting member 20 that is switched to an operation position (see FIG. 10B) that restricts swinging is provided. The lowering restricting member 20 is a state in which the normal state is switched to the retracted position, and in the state in which the lowering restricting member 20 is switched to the operating position, the cutting frame 13 is received and held at a predetermined lowered position. 3 has surfaced at a height close to the ground.

  As shown in FIGS. 6 to 8 and 11, the holder 17 swings between a support position for supporting the lifting fulcrum frame portion 14 between the holder 17 and a release position for releasing the support of the lifting fulcrum frame portion 14. It can be moved and can be held in the support position by fixing its free end to the mounting table 16 with a lock pin 21.

  As shown in FIGS. 1, 12, and 13, the lift cylinder 18 is configured so that one end of the lift cylinder 18 can be easily connected to and disconnected from the cutting frame 13 by operating the connecting pin 22.

  As shown in FIGS. 1, 5, and 14, 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 24 formed on the front wall 23 thereof, and The stockholder side of the harvested cereal rice cake whose posture has been changed to the sideways posture, the vertically-feed feed chain 25 composed of an endless rotating chain with a conveyance protrusion disposed on the left side thereof, and nipping and conveying the feed chain 25 Crop between the sandwiched rails 26 disposed opposite to the region and conveyed backward by driving the feed chain 25 and guided between the handling cylinder 27 and the receiving net 28 by the conveyance. Threshing process is performed on the tip side of the cocoon by driving the handling cylinder 27, and the processed product obtained by the threshing process is generated by sieving selection by driving the oscillating sorting plate 29 or by driving the tang 30 Wind sorting with sorting wind Which sorting process is performed, the single grain obtained by the sorting process is collected and supplied to the grain tank 5, and the non-single grain is collected and subjected to the single grain process. After that, it is conveyed back to the oscillating sorting plate 29, and dust such as straw scraps is discharged out of the machine.

  The clamping rail 26 is urged toward the feed chain 25 by a push spring (not shown) so that an appropriate clamping force can be obtained between the clamping rail 26 and the feed chain 25.

  As shown in FIG. 5, this combine transmits power from the engine 31 to the hydrostatic continuously variable transmission 32, and power after shifting by the hydrostatic continuously variable transmission 32 is built in the transmission case 33. 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 32 is transmitted to the cutting and conveying unit 3 by a belt tension type cutting clutch 34. The power from the engine 31 is transmitted to the threshing device 4 via a belt-tension type threshing clutch 35.

  The cutting and conveying unit 3 is configured to distribute and supply the power transmitted through the cutting clutch 34 to the pulling device 8 and the cutting device 9 through the first work transmission system 36 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 35 to the feed chain 25, the handling cylinder 27, and the like via the second work transmission system 37.

  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 shift of the vehicle speed by the hydrostatic continuously variable transmission 32, 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 speed change of the vehicle speed by the hydrostatic continuously variable transmission 32, the feed chain 25 and the handling cylinder 27 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 4, the culm conveying device 12 holds and conveys the tip side of the harvested cereal cocoon, which is located above the nip conveying mechanism 38 that nips and conveys the stock side of the chopped cereal. The holding and transporting mechanism 39 includes a first endless transporting chain 40 with transporting protrusions disposed on the left and right, and a first transporting end facing the sandwiching and transporting region of the corresponding first endless transporting chain 40. The clamping rod 41, the second endless transport chain 42 with transport protrusions arranged in a state of extending from the transport end portion of the first endless transport chain 40 on the right side toward the upper left rear, and the second endless transport chain 42 A second clamping rod 43 disposed opposite to the clamping conveyance region, a third endless conveyance chain 44 with a conveyance protrusion arranged in a state extending rearward from the conveyance terminal end of the second endless conveyance chain 42, and The third endless transport chain 3 is provided with a third clamping rod 45 disposed opposite to the clamping conveyance area 4 and driven by each endless conveyance chain 40, 42, 44, and is scraped and conveyed by each packer 10 on the conveyance start end side. The stock side of the harvested cereal culm is sandwiched between the first endless transport chain 40 on the left and right and the first gripper 41, and is gathered and transported toward the left and right center side of the rear upper side. The stock side of the harvested cereal grains collected and transported is sandwiched between the second endless transport chain 42 and the second clamping basket 43 and transported toward the upper left rear and transported to the upper rear left The stocked side of the harvested cereal culm is sandwiched between the third endless transport chain 44 and the third sandwiching culm 45 and transported toward the rear feed chain 25.

  It should be noted that each of the first to third clamping rods 41, 43, 45 is not shown so that an appropriate clamping force can be obtained between the corresponding first to third endless transport chains 40, 42, 44. It is urged | biased toward each 1st-3rd endless conveyance chain 40,42,44 corresponding by a press spring.

  As shown in FIGS. 1 to 6 and 14, the third endless transport chain 44 feeds between the third endless transport chain 44, which is the transport end portion of the sandwiching transport mechanism 38, and the transport start end of the feed chain 25. A vertical rotation type auxiliary conveyance device 46 that relays the delivery of the harvested cereal rice cake to the chain 25 is provided.

  The auxiliary conveyance device 46 includes a front driven roller 47 disposed on the left lateral side of the conveyance end of the third endless conveyance chain 44, a rear driven roller 48 disposed on the right lateral side of the conveyance start end of the feed chain 25, and a rear side. A driving sprocket 49 disposed below the driven roller 48, a tension roller 50 disposed between the front driven roller 48 and the driving sprocket 49, and an endless conveying chain 51 with a conveying protrusion that is laid around them, and the like The transport end side transport region of the endless transport chain 51 overlaps with the transport end side transport region of the third endless transport chain 44 in the transport direction, and the endless transport chain 51 transports the endless transport chain 51. The end position P1 is the transfer start end position P2 of the feed chain 25, the endless transfer chain 51 and the feed chain. So that the transport path K1 in the transport area and the transport path K2 on the transport start end side of the feed chain 25 are positioned substantially in a straight line. In addition, the support frame 52 is supported on the support frame 52 disposed behind the support column 15 in the body frame 1 through a support plate 53 and the like so as to extend from the support column 15 toward the rear feed chain 25.

  The conveyance end position P1 of the endless conveyance chain 51 is a position where the conveyance locus K1 is hidden by the side cover 54 of the threshing device 4 that conceals the non-conveyance region of the endless conveyance chain 51 and the feed chain 25. The conveyance start end position P2 is a position where the conveyance locus K2 appears from the side cover 54, and these positions P1 and P2 are conveyances that support the conveyance end side of the endless conveyance chain 51 via the rear driven roller 48. An endless transport chain between the support shaft 55 on the end side and the support shaft 57 on the transport start end side that supports the transport start end portion of the feed chain 25 via the driven sprocket 56 on the lower side in the transport direction than the support shaft 55 51 is set at a position where the conveyance locus K1 and the conveyance locus K2 of the feed chain 25 intersect. The transport path K1 of the auxiliary transport device 46 is formed by the tip of the transport projection 58 when the endless transport chain 51 is driven, and the transport path K2 of the feed chain 25 is transported when the feed chain 25 is driven. It is formed by the tip of the protrusion 59.

  The drive sprocket 49 of the auxiliary transport device 46 is connected to the left side of the auxiliary transport device 46 on the first output shaft 60 of the first work transmission system 36 extending leftward from the lifting fulcrum frame portion 14 of the cutting frame 13. The chain type transmission device 61 as an auxiliary conveyance device arranged adjacent to the side is linked and linked via a gear type transmission device 62 arranged adjacent to the left lateral side of the chain type transmission device 61.

  That is, the driving speed of the auxiliary conveyance device 46 is also changed in synchronization with the shift of the vehicle speed by the hydrostatic continuously variable transmission 32 together with the culm conveyance device 12 of the harvesting conveyance unit 3 and the like.

  The auxiliary transport device 46 is driven at a constant speed A at a predetermined speed A regardless of changes in the vehicle speed, whereas the endless transport chain 51 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 44 of the pinch conveyance mechanism 38 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.

  From this 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 sandwiched conveying of the cereal conveying device 12 is performed. Stability in which the stocker side of the harvested cereal rice cake held and transported by the mechanism 38 is supported at two points by the third endless transport chain 44 of the sandwiching transport mechanism 38 and the endless transport chain 51 of the auxiliary transport device 46 with almost no speed difference. Nipping and transporting while slightly changing the posture of the harvested cereals from the posture close to the sideways fall obtained by the 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 46 and the holding conveyance mechanism 38 from the auxiliary conveyance device 46, the conveyance posture of the harvested cereal meal is the same posture. (Threshing Feed was composed passed by it to the feed chain 25 which is set to a higher stable lateral falling posture) suitable for to 4.

  In short, when it is configured to directly deliver the harvested cereal mash from the sandwiching and conveying mechanism 38 of the cereal conveying device 12 to the feed chain 25, 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 likely to cause a transport failure or dropout due to the disorder of the transport posture. However, if the auxiliary transport device 46 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.

  Further, the third endless transport chain of the sandwiching and transporting mechanism 38 having almost no speed difference when delivering the harvested sorghum to the auxiliary transporting device 46 from the sandwiching and transporting mechanism 38 of the grain and shelling transporting device 12 in which the posture of the harvested mashing culm is changed. 44 and the endless conveying chain 51 of the auxiliary conveying device 46 are in a highly stable state, and it is effective that the conveying posture of the harvested cereal cocoon is disturbed due to the change in the posture of the harvested cereal cocoon. Can be suppressed.

  Further, between the auxiliary conveyance device 46 and the feed chain 25 where the speed difference may be relatively large, the auxiliary conveyance device 46 determines the conveyance end position P1 of the auxiliary conveyance device 46 and the conveyance start end position P2 of the feed chain 25. The transport locus of the endless transport chain 51 is between a transport end side support shaft 55 that rotatably supports the endless transport chain 51 and a transport start end support shaft 57 that rotatably supports the feed chain 25. By setting the position where K1 and the conveyance trajectory K2 of the feed chain 25 intersect to coincide with each other in the conveyance direction and the height direction of the auxiliary conveyance device 46 and the feed chain 25, the harvested cereal rice bran is endless. The feed chain 25 is pushed out by the feed protrusion 58 of the feed chain 51 and the feed by the endless feed chain 51 is completed. Since it is scraped to the feed chain 25 side by the conveyance protrusion 59 of the chain 25 and the conveyance by the feed chain 25 is started, the auxiliary conveying device 46 and the feed chain 25 both hold the harvested cereal rice cake. In this way, it is possible to more reliably avoid the disturbance in the conveying posture of the harvested cereal, and in order to avoid the disturbance, the harvested cereal resulting from separating the auxiliary conveying device 46 and the feed chain 25 in the conveying direction. It is possible to prevent a decrease in the conveyance force with respect to.

  In addition, in order to avoid such disturbances in the transport posture and a decrease in transport force, a transport path K1 in the transport region of the auxiliary transport device 46 is not provided, but a drop is not provided between the auxiliary transport device 46 and the feed chain 25. And the transport locus K2 at the transport start end of the feed chain 25 are positioned on a substantially straight line, so that disturbance in the transport posture of the harvested cereals due to the drop can be avoided and the auxiliary transport device 46 to the feed chain 25 The cereals can be delivered and transported smoothly and beautifully.

  In addition, the relationship between the driving speeds of the third endless transport chain 44 of the clamping transport mechanism 38 and the endless transport chain 51 of the auxiliary transport device 46 and the feed chain 25 is determined as the fastest state of the third endless transport chain 44 and the endless transport chain 51. The feed chain 25 is driven at a speed within the shifting range of the third endless transport chain 44 and the endless transport chain 51 by making the drive speed higher than the drive speed of the feed chain 25. The speed difference between the endless transport chain 51 and the feed chain 25 where the harvested cereal rice cake is delivered can be reduced, and the disturbance in the transport posture of the harvested grain rice cake due to the speed difference can be suppressed.

  As a result, the supply and 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 is possible to carry out smoothly and beautifully while making it difficult to cause poor conveyance and dropout.

  As shown in FIGS. 2, 3, 5 to 8, and 14, the chain transmission 61 is disposed behind the first sprocket 63 as a first rotating body that rotates integrally with the first output shaft 60. Further, a second sprocket 64 as a second rotating body, a transmission chain 65 as an endless transmission band that is wound around the sprockets 63, 64, and a tension that includes a spring plate as a tension mechanism that tensions the transmission chain 65 The first sprocket 63 is configured by removing the tension metal 66 that is configured to include the metal fitting 66 and the like, and is mounted on the support plate 53 so that the support plate 53 can be easily attached and detached in a predetermined posture. It is possible to easily attach and detach the transmission chain 65 to and from.

  As shown in FIGS. 5 and 14, the gear type transmission mechanism 62 includes a first gear 68 that rotates integrally with the second sprocket 64 of the chain type transmission mechanism 61 via the first transmission shaft 67, and the first gear 68. The second gear 70 that meshes with the drive sprocket 49 of the auxiliary transport device 46 via the second transmission shaft 69 and a gear case 71 that surrounds the gears 68 and 70 are provided. ing.

  With the above configuration, when swinging the cutting and conveying unit 3 left and right with the support column 15 as a fulcrum, first, the lowering restricting member 20 is switched to the operating position to hold the cutting and conveying unit 3 at a predetermined lowered position. Then, the tension metal fitting 66 of the chain type transmission mechanism 61 is removed from the support plate 53 to release the turning of the transmission chain 65 with respect to the first sprocket 63 and the connection between the cutting frame 13 and the lift cylinder 18 by the connection pin 22 is released. After that, it is only necessary to release the fixing of the holder 17 to the mounting table 16 by the lock pin 21, and only by performing these operations, the pallet conveying device 12 is nipped and conveyed between the harvesting conveying unit 3 and the threshing device 4. While carrying the auxiliary conveyance device 46 that makes the delivery of the harvested cereals from the mechanism 38 to the feed chain 25 good, Swing left and right over a work position located in front of the threshing device 4 adjacent to the left lateral side of the unit 6 and a maintenance position that greatly opens the left lateral side of the boarding operation unit 6 and the front of the threshing device 4. Maintenance of a transmission system, an operation system, and the like provided between the harvesting conveyance unit 3 and the threshing device 4 or between the harvesting conveyance unit 3 and the boarding operation unit 6 can be easily performed.

  Further, the auxiliary conveying device 46 is driven by the power through the first work transmission system 36 of the cutting and conveying unit 3, so that the auxiliary conveying device 46 and the cutting and conveying unit 3 are synchronized with the shifting of the vehicle speed by the hydrostatic continuously variable transmission 32. Although it is configured to be shifted, it can remain on the threshing device 4 side when the cutting and conveying unit 3 is swung left and right, so that the cutting and conveying unit is compared with the case of swinging integrally with the cutting and conveying unit 3. It is not necessary to provide a space for allowing the auxiliary conveying device 46 to swing between the threshing unit 4 and the threshing device 4, and the auxiliary conveying device 46 and the feed chain 25 can be easily aligned when assembled. Become.

  As shown in FIGS. 4, 6, and 14, the stocker side of the harvested cereal mash is assisted from the sandwiching transport mechanism 38 at the delivery location where the harvested cereal mash is delivered from the clamping transport mechanism 38 to the auxiliary transport device 46. A guide rod 72 that guides the conveying device 46 and a pressing plate 73 that presses the stock side of the harvested cereal rice cake toward the auxiliary conveying device 46 are provided. The guide rod 72 is made of a round steel material extending from the cutting frame 13 toward the endless transport chain 51 so as to be swingable up and down, and its extended end side is received and supported by the endless transport chain 51 of the auxiliary transport device 46 and pulled. The spring 74 prevents jumping due to vibration during traveling. The holding plate 73 is made of a leaf spring extending from the guide rod 72 toward the auxiliary conveying device 46, swings integrally with the guide rod 72, and elastically moves the stock side of the harvested cereal cocoon to the auxiliary conveying device. Press toward 46.

  That is, the guide rod 72 can swing up and down with respect to the cutting and conveying unit 3, and the extension end side is received and supported by the auxiliary conveying device 46. As a result, it is maintained in an appropriate guide posture regardless of the height adjustment, and as a result, regardless of the cutting height adjustment, the guide rod 72 guides from the holding conveyance mechanism 38 on the side of the harvested culm stock to the auxiliary conveyance device 46. Can be performed well.

  The pressing plate 73 extends from the guide rod 72 that is maintained in an appropriate guide posture regardless of the cutting height adjustment. Therefore, the pressing plate 73 adjusts the cutting height by moving the cutting and conveying unit 3 up and down. Regardless of the cutting height, the pressing force against the stock side of the harvested cereal by the elasticity of the pressing plate 73 becomes substantially constant. Disturbance of the conveying posture of the harvested cereal rice cake in the auxiliary conveying device 46 due to the attachment force becoming too weak, clogging of the harvested cereal rice cake in the auxiliary conveying device 46 due to the pressing force becoming too strong, etc. Can be prevented.

  As shown in FIG. 4 and FIG. 14, the nipping and conveying mechanism 38 includes a nipping and conveying mechanism for holding the stock side of the harvested cereal rice cake passed from the third endless conveying chain 44 to the endless conveying chain 51 of the auxiliary conveying device 46. 38 and the auxiliary conveyance device 46 are provided with a first support rod 75 that is received and supported from below on the left side of the auxiliary conveyance device 46, and is received from the holding conveyance mechanism 38 to the auxiliary conveyance device 46 by the reception support by the first support rod 75. It is possible to prevent the cutting side of the harvested cereal rice cake from being lifted up, and to prevent the misalignment or dropping off of the harvested rice cake caused by the lifting.

  As shown in FIGS. 4 and 6, the auxiliary conveyance device 46 has a stocker side of the harvested cereals passed from the endless conveyance chain 51 to the feed chain 25 on the left side of the auxiliary conveyance device 46 and the feed chain 25. A second support rod 76 that is received and supported from below is provided at the location. With the support supported by the second support rod 76, the tip side of the harvested cereal rice cake passed from the auxiliary transport device 46 to the feed chain 25 is lifted. It is possible to prevent the misalignment and dropping off of the harvested cereals caused by the floating.

  As shown in FIG. 4, the locking and conveying mechanism 39 of the culm conveying device 12 is deployed in a state extending from above the scraping belt 11 disposed at the right end to the vicinity of the receiving port 24 of the threshing device 4. A right side locking and conveying band 77, a left side locking and conveying band 78 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 band 77, and the like. The conveyance start end of the right side engagement conveyance band 77 is formed on the tip side of the harvested cereal rice cake that has been conveyed by the scrambling belt 11 on the conveyance start end side by driving the engagement conveyance bands 77 and 78. The left side or left side locking conveyance band 78 is latched and scraped and conveyed toward the rear left and right center side, and on the conveyance end side, the right side locking conveyance band 77 is placed on the tip side of the harvested cereal rice cake. The transfer end side of the sword is locked, and the tip side is moved from the upper side of the cereal transfer device 12 to the right. It conveyed toward the receiving port 24 of the rear threshing apparatus 4 while gradually displaced towards.

  In addition, each latching conveyance belt | band | zone 77 and 78 is arranged in parallel with the endless rotation chain 79 in the state which spaced apart the some latching claw 80 at fixed intervals.

[Another Example]
Other embodiments of the present invention will be listed below.
[1] The combine may be equipped with, for example, a belt type continuously variable transmission instead of the hydrostatic continuously variable transmission 32.

[2] The auxiliary transport device 46 may be configured such that the endless transport chain 51 is driven at the same speed as the third endless transport chain 44 of the pinch transport mechanism 38 in the cereal haul transport device 12.

[3] The difference between the drive speed B (fastest) of the auxiliary transport device 46 and the drive speed (fastest) of the nipping and transporting mechanism 38 may be set to be greater than 1%.

[4] The auxiliary conveyance device 46 is arranged so that its conveyance terminal end is higher than the conveyance start end of the feed chain 25, and the chopped cereal is dropped and supplied from the conveyance termination of the auxiliary conveyance device to the conveyance start end of the feed chain. By doing so, you may make it avoid the disorder | damage | failure of the conveyance attitude | position of the harvested corn straw by holding both of the harvested grain mash with the auxiliary conveyance apparatus 46 and the feed chain 25 with which a speed difference may become comparatively large.

[5] The auxiliary conveyance device 46 may be configured to be shifted in synchronism with the shift of the vehicle speed together with the harvesting device 9 of the harvesting conveyance unit 3, the cereal conveyance device 12, and the like. For example, when the vehicle speed is within a predetermined very low speed region, the auxiliary transfer device 46 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. In addition, when the vehicle speed is equal to or lower than a predetermined high speed, the auxiliary transfer device 46 is shifted in synchronism with the speed change of the vehicle speed together with the cutting device 9 and the grain feeder 12 of the cutting transfer unit 3, 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.

[6] The auxiliary transport device 46 is in a state where the support shaft 55 on the transport end side is positioned on the lower side in the grain transport direction with respect to the support shaft 57 that supports the transport start end portion of the feed chain 25, or the feed You may comprise in the state which corresponds with the spindle 57 of the chain 25 in the grain conveying direction.

[7] A conveyance end position P1 of the auxiliary conveyance device 46 and a conveyance start end position P2 of the feed chain 25, and a support shaft 57 that supports the conveyance end side shaft 55 of the auxiliary conveyance device 46 and the conveyance start end portion of the feed chain 25. It may be set at a position where the conveyance locus K1 of the auxiliary conveyance device 46 and the conveyance locus K2 of the feed chain 25 intersect each other at a position other than the position between them. Also, the conveyance locus K1 in the conveyance region of the auxiliary conveyance device 46 may be set. May be set to a position where the feed path 25 is joined to the feed locus K2 on the feed start end side.

[8] The conveyance locus K1 in the conveyance region of the auxiliary conveyance device 46 and the conveyance locus K2 on the conveyance start end side of the feed chain 25 may be arranged on a straight line.

[9] The auxiliary transmission 61 may be a belt transmission type. Further, as the tension mechanism 66 of the auxiliary transmission device 61, a structure in which a tension wheel provided in the swing arm is pressed against the endless transmission band 65 by the bias of a spring may be employed.

Combine side view Overall plan view of the combine showing the state where the cutting and conveying section is located at the work position Overall plan view of the combine showing the state in which the cutting and conveying section is located at the maintenance position Schematic plan view of the cutting and conveying section Schematic diagram of transmission system Front view of the main part showing the support structure of the harvesting transport unit and the delivery structure of the harvested cereal meal The top view of the principal part which shows the state which located the cutting conveyance part in the work position The top view of the principal part which shows the state which located the cutting conveyance part in the maintenance position Longitudinal side view of the main part showing the support structure of the cutting and conveying section Longitudinal side view of the main part showing the action of the lowering restricting member Longitudinal side view of the main part showing the action of the holder Side view of the main part showing the cylinder connection structure Longitudinal rear view of main part showing cylinder connection structure Longitudinal side view of the main part showing the delivery structure

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Machine frame 3 Cutting and conveying part 4 Threshing device 12 Grain conveying device 25 Feed chain 38 Nipping and conveying mechanism 46 Auxiliary conveying device 61 Auxiliary transmission device 63 First rotating body 64 Second rotating body 65 Endless transmission band 66 Tension mechanism

Claims (2)

A work position where a reaping and transporting unit having a cereal transporting device for transporting the reaping cereal while changing the posture from an upright position to a lying-down position on a machine frame equipped with a threshing device is positioned in front of the threshing device. And a harvested cereal haul conveying structure for a combine that is connected so as to be able to swing left and right over a maintenance position that is deviated laterally outward from the work position,
A feed chain of the vertical rotation type in which the stocker side of the harvested cereal grains whose posture has been changed by the cereal grain conveying device to a position close to its side position is disposed from the holding conveyance mechanism of the cereal conveying apparatus to the lateral outer side of the threshing device. Provided with a vertical rotation type auxiliary conveyance device to be transferred to the vehicle body, the auxiliary conveyance device is fixedly mounted on the machine body frame side, and is driven by power transmitted from the cutting conveyance unit via the auxiliary transmission device,
The auxiliary transmission device is attached to the cutting and conveying unit side, and a first rotating body to which power from the cutting and conveying unit is input; and the auxiliary conveying device that is attached to the machine body frame side and receives power from the cutting and conveying unit a second rotary member to be outputted to said the first rotor and the second rotor and the endless transmission belt hung turning over, combine said are the endless transmission belt constituted by a tensioning mechanism for tensioning Harvested cereal conveyance structure. 2. The harvested cereal conveying structure for a combine according to claim 1, wherein the auxiliary transmission device is arranged on the laterally outer side of the body from the auxiliary conveying device.

Images