JP2007236275A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent reaped grain straws joined at the vicinity of an approaching position of chains 43, 44 from winding around a driving sprocket 62, etc., and jamming in a combine harvester provided with an intermediate conveyer having right and left lower chain conveyer 43, 44, by a simple structure. <P>SOLUTION: Cover bodies 92, 93 are disposed to prevent the reaped grain straws from winding up on the sprocket 62, etc. on both upside and downside of a sprocket 62 interposed therebetween. The down side cover body 93 is provided with a guide member 95 guiding root parts of the reaped grain straws joined from three rows to the direction of a vertical conveying chain 47. The conveying efficiency of the reaped grain straws are improved as the result of preventing the reaped grain straws from winding around the sprocket 62, etc., by the both upside and downside cover bodies 92, 93 and the guide member 95. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a combine in which a pre-cutting processing device for continuously cutting cereal grains in a field is mounted on the front part of a traveling machine body.

  Conventionally, in this type of combine, at the front part of a traveling machine body equipped with a threshing device with a feed chain, a pre-harvest processing device comprising a grain raising device, a cutting blade device, a stock transport device, a vertical transport device, etc. Is mounted so that it can be lifted and lowered by a lifting actuator.

  The stock transportation device among the devices of the pre-harvest processing device includes a first endless chain mechanism that transports the harvested cereal that has been harvested from one of the plurality of strips, and the harvested cereal that has been harvested from the other strip. And a second endless chain mechanism for conveying. The feed end portion of the second endless chain mechanism is close to the first endless chain mechanism, and the cutting end fed by the second endless chain mechanism to the harvested cereal meal being conveyed by the first endless chain mechanism After the cereals are merged, the stock base portion of the merged harvested cereals is transferred to the rear vertical conveying device.

  In the vicinity of the proximity of the first endless chain mechanism and the second endless chain mechanism (the confluence of the harvested cereals), the flow of the harvested cereals tends to stagnate because the roots of the harvested cereals gather. Grain stagnation in the vicinity tends to clog around the endless chain mechanism or its drive sprocket.

In this regard, for example, in Patent Document 1, a guide roller located upstream in the feed direction among the two guide rollers wound around the feed end portion of the second endless chain mechanism is in contact with the first endless chain mechanism. It has been proposed to configure it so that it can be moved away. According to this configuration, when the harvested cereal culm is clogged in the vicinity of the vicinity of the first endless chain mechanism and the second endless chain mechanism, the first endless guide roller on the upstream side in the feed direction is out of the two guide rollers. By moving away from the chain mechanism, the jammed jam can be released and the jam can be easily removed.
JP-A-10-136755

  However, in the configuration of Patent Document 1, it is easy to remove the clog of the harvested cereal meal in the vicinity of the adjacent portion, but the clogging itself cannot be suppressed. For this reason, in order to suppress clogging itself and to improve the conveyance efficiency, the configuration of Patent Document 1 is unsuitable.

  Further, in the stock transporter, a guide rod for guiding a plurality of merged harvested rice cakes (hereinafter referred to as a combined rice cake) further toward the downstream side in the feed direction near the joining location of the harvested rice cake. May be provided (for example, refer to JP-A-2005-130761). This type of guide rod is usually connected to a support member (such as a bracket) constituting an endless chain mechanism via a mounting seat or the like.

  However, in the above-described conventional manner of attaching the guide rods, if a large amount of the combined cereal mashes push the endless chain mechanisms to the left and right outwards due to their bulk, causing the endless chain mechanisms to twist, Since the endless chain mechanism is pushed outwardly in conjunction with the movement of the endless chain mechanism, the posture of the guide basket is disturbed, and as a result, the conveyance posture of the combined grain basket is disturbed.

  Therefore, the present invention has a technical problem to provide a combine that solves the above problems.

  In order to solve this technical problem, the invention of claim 1 is a combine in which a cutting pretreatment device having a relay conveyance device is attached to a front portion of a traveling machine body so as to be adjustable up and down by an elevator actuator. The relay transport device transports the harvested cereal mash that has been harvested from one of the plurality of strips, and the first endless strip by transporting the chopped cereal that has been harvested from the other strip. A second endless belt mechanism that merges in the vicinity of the feed end portion of the mechanism, and the transmission vehicle and the second end mechanism are disposed on both sides of the transmission vehicle around which the feed end portion of the second endless belt mechanism is wound. (2) A cover body for preventing the harvested cereal wrapping around the endless belt mechanism is disposed, and at least one of the two cover bodies joins in the vicinity of the feed end portion of the first endless belt mechanism. More cut cereals for multiple sections Guide members for guiding toward the downstream side in the direction Ri is that are provided.

  According to a second aspect of the present invention, in the combine described in the first aspect, one of the two cover bodies is detachably attached to a midway portion of the cutting frame that projects obliquely forward and downward from the traveling machine body. On the other hand, the other cover body is provided integrally with a scraping frame that is detachably attached to the mowing frame so as to protrude obliquely upward in the forward direction.

  In invention of Claim 1, for preventing the winding cereal wrapping around the transmission vehicle and the second endless belt mechanism on both sides of the transmission vehicle around which the feed end portion of the second endless belt mechanism is wound Since the cover bodies are arranged, the presence of both cover bodies makes it difficult for the harvested cereal rice cake being conveyed to become entangled with the transmission vehicle, its support shaft, and the second endless belt mechanism. ). For this reason, it is possible to effectively prevent the harvested cereal from being wound around the transmission wheel and the like, and thus from being clogged.

  In addition, since at least one cover body is attached with a guide member for guiding the plurality of merged harvested cereal grains further toward the downstream side in the feed direction, the guide member itself is also attached to the transmission vehicle. It plays a role in suppressing the entanglement of the harvested cereal meal. That is, the guide member can exhibit not only the function of guiding (guiding) the harvested cereal but also the same wrapping prevention function as that of the cover body.

  Therefore, according to the first aspect of the present invention, it is possible to more reliably prevent the harvested cereal wrapping around the transmission vehicle and the like, and thus clogging of the harvested cereal, and improve the efficiency of conveying the harvested cereal.

  Further, since the cover body for preventing wrapping also serves as a mounting seat for mounting the guide member, it is not necessary to separately provide a mounting member. This contributes to the suppression of the number of parts.

  According to a second aspect of the present invention, either one of the two cover bodies is detachably attached to a midway portion of the cutting frame that protrudes obliquely downwardly forward from the traveling machine body, while the other cover body. Is integrally provided with a scraping frame that is detachably attached to the cutting frame so as to protrude obliquely upward in the forward direction. For this reason, when assembling (manufacturing) the relay conveyance device, for example, the one cover body with the guide member is attached to the middle part of the cutting frame, and then the second endless belt mechanism is wound around the transmission vehicle. Thereafter, the scraping frame may be connected to the cutting frame.

  Therefore, it is possible to save the trouble of attaching the other cover body alone, and it is not necessary to adjust the positional relationship between the other cover body and the transmission vehicle. Can be reduced. In addition, it is possible to reduce the number of steps for assembling the relay conveyance device in the combine production line, and to contribute to the reduction of the manufacturing cost.

  DESCRIPTION OF EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings (FIGS. 1 to 6). 1 is a side view of a combine to which the present invention is applied, FIG. 2 is a plan view of the combine, FIG. 3 is a schematic front view showing a support structure for a pre-cutting processing apparatus, and FIG. 4 is a diagram with some members omitted. FIG. 5 is a skeleton diagram showing the power transmission system of the pre-cutting processing device, and FIG. 6 is a schematic diagram showing the positional relationship between each device in the pre-cutting processing device, the cover body, and the guide member. It is a top view.

(1). General Structure of Combine First, the general structure of the combine will be described with reference to FIG.

  The combine for three-row cutting in this embodiment includes a traveling machine body 1 supported by a pair of left and right traveling crawlers 2 and 2. At the front part of the traveling machine body 1, a pre-cutting processing device 3 that takes in while harvesting grains is mounted so as to be adjustable up and down by a single-acting hydraulic cylinder 30 (lifting actuator, see FIG. 4). A threshing device 4 with a feed chain 5 and a grain tank 6 for storing grain after threshing are mounted side by side on the traveling machine body 1. In the present embodiment, the threshing device 4 is disposed on the left side in the traveling direction of the traveling machine body 1, and the grain tank 6 is disposed on the right side in the traveling direction of the traveling machine body 1. Between the pre-harvest processing device 3 and the grain tank 6, there is provided a driving unit 8 having a steering round handle 9 and a driving seat 10 for changing the direction and speed of the traveling machine body 1. An engine 11 as a power source is disposed below the operation unit 8. In order to transmit power from the engine 11 to the left and right traveling crawlers 2, 2 at an appropriate speed in front of the engine 11. A mission case 12 is arranged.

  The pre-harvest processing device 3 includes a clipper-type cutting blade device 13, a culm pulling device 14 for three strips, a culm conveying device 15, and a weed body 16. The cutting blade device 13 is disposed below the weeding frame 33 constituting the pre-cutting processing device 3. The grain raising device 14 is disposed above the weed frame 33. The corn straw transporting device 15 is disposed between the corn straw pulling device 14 and the front end of the feed chain 5. The weeding body 16 protrudes in front of the lower part of the grain raising device 14. The harvested cereal grains harvested by the pre-harvest processing device 3 are transferred to the feed chain 5 and threshed by the threshing device 4.

  The handling room of the threshing device 4 has a built-in handling cylinder 17 for threshing the harvested cereal. Below the handling cylinder 17, there are arranged a swing sorting mechanism for performing swing sorting by a handling net, a chaff sheave or the like, and a wind sorting mechanism for performing wind sorting by a Kara fan. The grains collected by the first receiving bowl at the lower part of the traveling machine body 1 through the sorting by both the sorting mechanisms are accumulated in the grain tank 6 via the first conveyor and the cereal conveyor. The sawdust is sucked into a suction fan disposed at the rear of the threshing device 4 and then discharged from the discharge port to the outside of the machine. The grain in the grain tank 6 is carried out of the machine via the discharge auger 7.

  In addition, the waste inherited from the rear end of the feed chain 5 to the waste chain is discharged to the rear of the traveling machine body 1 in a long state, or after being cut to a short length as appropriate with a waste cutter, It is discharged behind the traveling machine body 1.

(2). Next, the structure of the pre-cutting processing apparatus will be described with reference to FIGS.

  The pre-cutting processing device 3 has a vertical support shaft 21 erected on the left front end of the body frame (chassis) 20 in order to facilitate maintenance of the devices 13 to 15 therein, the engine 11, the transmission case 12, and the like. Is configured to be able to open and close horizontally (see the state of the two-dot chain line in FIG. 2).

  In this case, a bracket device 22 is mounted on the vertical support shaft 21 so as to be horizontally rotatable, and the horizontally long cutting input pipe 23 is pivotable with respect to the bracket device 22 in a state in which it can rotate around its axis. It is supported. Note that a reinforcing member 24 (a hard shaft) that is tilted backward as viewed from the side is fixed to the body frame 20 and the vertical support shaft 21 in the bracket device 22 by welding (see FIG. 4).

  A bearing member 25 made of cast iron or the like is provided at the front end of the cutting input pipe 23 and the bracket device 22 (the end opposite to the vertical support shaft 21), while the front end of the body frame 20 is provided at the front end. A column member 26 protruding upward is erected at a position located below the bearing member 25 when the cutting pretreatment device 3 is in the closed state. When the pre-cutting processing device 3 is in the closed state, the bottom plate of the bearing member 25 is bolted to the upper plate of the support member 26. By fixing the bearing member 25 to the support member 26 in this way, the pre-cutting processing device 3 is held in a closed state.

  The cutting input pipe 23 includes a cutting input shaft 50 concentric with this. The front end portion of the cutting input shaft 50 protrudes outward from the cutting input pipe 23. A cutting input pulley 51 is fixed to the protruding end. A power transmission belt 39 is wound around a transmission pulley 38 (see FIG. 6) fixed to the power transmission shaft of the transmission case 12.

  A longitudinal transmission pipe 27 as a cutting frame extending diagonally forward and downward is attached to a midway portion of the cutting input pipe 23 through a gear box 28 fixed to the cutting input pipe 23. Therefore, the cutting input pipe 23 and the vertical transmission pipe 27 can be horizontally rotated around the vertical support shaft 21, and the vertical transmission pipe 27 can be rotated in the vertical direction around the cutting input pipe 23. It has become.

  As shown in FIG. 4, a bearing rib 29 protrudes downward from a longitudinal middle portion of the vertical transmission pipe 27, and a piston rod 30 a of a hydraulic cylinder 30 is formed on the left and right horizontally long pins 31 on the bearing rib 29. Are connected. Although not shown in detail, the rear end portion of the hydraulic cylinder 30 is connected to the body frame 20 so as to be rotatable by a pin.

  When the cutting pretreatment device 3 is opened and rotated, as a prerequisite work, the pin 31 connecting the hydraulic cylinder 30 and the longitudinal transmission pipe 27 is removed, and the transmission pulley 38 on the transmission case 12 side is removed. The belt 39 wound around the cutting input pulley 51 is removed.

  At the lower end of the vertical transmission pipe 27, a horizontally long horizontal transmission pipe 32 (see FIG. 2) is provided. A plurality of weed frames 33 projecting forward are arranged in parallel in the horizontal transmission pipe 32 at appropriate intervals along the longitudinal direction of the horizontal transmission pipe 32. A clipper type cutting blade device 13 is provided below the weeding frame 33. A weeding body 16 protrudes from the tip of each weeding frame 33.

  In addition, the horizontal transmission pipe 32 is provided with a number of support pipes (three in this embodiment) corresponding to the number of cutting lines extending so as to extend obliquely upward in the forward direction. A pulling device 14 is attached.

  The grain raising device 14 is arranged in a laterally rotating type grain raising case 40 having an erecting tine for raising an uncut grained rice cake taken in via the weed body 16 and the rear lower part of each grain raising case 40. The star wheel 41 and the scraping belt 42 are configured. The star wheel 41 and the scraping belt 42 are for scraping backward the stock base portion of the uncut grain culm caused by the pulling tine corresponding to these sets. The stock base portion of the uncut cereal rice cake scraped by the star wheel 41 and the scraping belt 42 is cut by the clipper type cutting blade device 13.

  Grain transport for pinching and transporting the harvested culm harvested by the cutting blade device 13 between the cereal pulling device 14 and the front end of the feed chain 5 and on the left side of the mission case 12 A device 15 is arranged.

  As shown in FIGS. 5 and 6, the cereal conveying device 15 includes a left lower conveying chain 44 as a first endless belt mechanism for conveying the left two reaped harvested cereals diagonally to the right and the right one Right lower transport chain 43 as a second endless belt mechanism for transporting the harvested cereal rice cake diagonally to the left and joining the stock base portion in the vicinity of the feed end position of the lower left transport chain 44, and the harvesting of the left two strips The upper left transport tine 46 that transports the head part of the cereals diagonally to the right rear, and the upper right transport tine that transports the tip part of the right crop of the harvested cereals to the left diagonal rear and merges with the upper left transport tine 46. 45, a vertical conveying chain 47 for transferring and transferring the stock portion of the three chopped cereal rice cakes joined in the vicinity of the feed end position of the lower left conveying chain 44 to the feed chain 5, and the three chopped grains The tip for transporting the tip of the salmon toward the threshing device 4 And a feed tines 48. The combination of the left and right lower transport chains 43 and 44 corresponds to the relay transport device described in the claims.

  The feed end portion of the lower right transport chain 43 is close to the lower left transport chain 44, and the stock transport path 90 through which the stock base part of the harvested cereal passes passes between the left and right lower transport chains 43, 44. (See FIG. 6). For this reason, in the vicinity of the left and right lower transport chains 43, 44, the harvested cereal grains sent by the lower left transport chain 43 join the harvested grain grains being transported by the lower right transport chain 44. Become. That is, the left and right lower transport chains 43 and 44 form a stock transport path 90 having a reverse y-shape in plan view.

  The stock parts of the three reaped cereal grains that have joined together in the proximity of these chains 43 and 44 are transferred to the rear vertical transfer chain 47, and then transferred to the feed chain 5 and sandwiched and transferred. Then, the tip of the harvested cereal mash is threshed by the handling drum 17 in the handling chamber of the threshing device 4.

(3). Next, the power transmission system to the pre-harvest processing apparatus will be described with reference to FIG.

  Power from the engine 11 via the transmission case 12 is transmitted from the power transmission shaft of the transmission case 12 to the cutting input shaft 50 built in the cutting input pipe 23 via the pulleys 38 and 51 and the belt 39 transmission system. .

  The power transmitted to the cutting input shaft 50 is transmitted to the lateral transmission shaft 53 incorporated in the lateral transmission pipe 33 via the longitudinal transmission shaft 52 incorporated in the longitudinal transmission pipe 27, and then from the lateral transmission shaft 53. Power is transmitted to the pulling transmission shaft 54 (three in this embodiment) and the pair of left and right cutting blade drive shafts 55 in the support pipe.

  The power transmitted to the left and right pulling transmission shafts 54 drives the pulling tines of the left and right grain raising case 40 through the pulling sprocket shaft 56 and the pulling sprocket 57 connected thereto. The power transmitted to the central pulling transmission shaft 54 is connected to the central pulling sprocket shaft 56 and this via a relay shaft 58 linked to the pulling transmission shaft 54 and a pulley and belt transmission system 59. It is transmitted to the pulling sprocket 57 and drives the pulling tine of the central grain pulling case 40. The power transmitted to each cutting blade drive shaft 45 drives the cutting blade device 13.

  A part of the power transmitted to the vertical transmission shaft 52 in the vertical transmission pipe 27 is branched and transmitted to the lower right conveyance drive shaft 61 via a bevel gear mechanism 60 provided in the middle portion of the vertical transmission shaft 52. The The power transmitted to the lower right conveying drive shaft 61 drives the lower right conveying chain 43 of the cereal conveying device 15 to rotate through the drive sprocket 62 connected thereto, and the right side of the cereal raising device 14 The star wheel 41 and the scraping belt 42 are rotated. The drive sprocket 62 connected to the lower right conveyance drive shaft 61 corresponds to the transmission vehicle described in the claims.

  On the other hand, the power is branched and transmitted from the left pulling transmission shaft 54 to the upper left conveyance drive shaft 64 and the lower left conveyance drive shaft 65 via the pulley and belt transmission system 63. The power transmitted to the upper left conveyance drive shaft 64 drives the upper left conveyance tine 46 of the cereal conveyance device 15. The power transmitted to the lower left conveying drive shaft 65 is supplied to the left lower conveying chain 44 of the cereal conveying device 15 and the right and center star wheels of the cereal raising device 14 via a drive sprocket 66 connected thereto. 41 and the scraping belt 42 are driven. An upper right conveyance drive shaft 67 is linked to the central star wheel 41, and a part of the power transmitted to the central star wheel 41 passes through the upper right conveyance drive shaft 67 to the upper right conveyance tine 45. Drive.

  The power transmitted to the cutting input shaft 41 is also branched and transmitted to the vertical transport chain 47 and the tip transport tine 48 of the grain feeder 14 via the vertical drive shaft 68 and the like.

(4). Next, the detailed structure of the mission case will be described with reference to FIG.

  As is apparent from the above description, the mission case 12 is disposed in front of the engine 11 and to the right of the grain feeder 15 (more specifically, to the right of the vertical conveyor chain 47 and the tip conveyor tine 48). Yes. That is, the mission case 12 and the cereal transport device 15 are arranged side by side in the left-right direction intersecting the traveling direction of the traveling machine body 1 in plan view.

  The transmission case 12 is provided with a cylindrical axle case 70 that protrudes toward the left and right outer sides. The axle case 70 has a built-in axle 71 that extends concentrically with the axle case 70, and both ends of the axle 71 are attached with starting wheels 72 that rotate integrally with the axle 71 to drive the traveling crawler 2. .

  The traveling crawler 2 includes the above-described starting wheel 72, a guide wheel 73 disposed on the rear end side of the traveling machine body 1, an endless crawler belt 74 wound around the outer periphery of the starting wheel 72 and the guide wheel 73, and a crawler belt. And a lower roller 75 that supports the inner peripheral surface of the lower end of 74 (see FIG. 1). By transmitting the branch power from the engine 11 via the transmission case 12 to the axle 71, the starting wheel 72 and the crawler belt 74 are rotationally driven so that the traveling machine body 1 travels forward and backward.

  Further, as described above, a power transmission shaft (not shown) also protrudes from the mission case 12 toward the grain feeder 15 and the transmission pulley 38 is fixed to the power transmission shaft.

  In the upper part of the transmission case 12, traveling and turning hydraulic drive means 81 and 82 (HST type continuously variable transmission mechanisms) for appropriately shifting the power from the engine 11 are provided side by side. Both the traveling and turning hydraulic drive means 81 and 82 are composed of a variable displacement hydraulic pump and a hydraulic motor (both not shown).

  The traveling hydraulic drive means 81 on the rear side includes a traveling pump shaft 83 projecting toward both left and right outer sides, and a traveling motor shaft (not shown) projecting into the transmission case 12.

  On the other hand, the turning hydraulic drive means 82 on the front side protrudes into the transmission case 12 and the turning pump shaft 84 that protrudes from the turning hydraulic drive means 82 in the right direction on the opposite side of the cereal conveying device 15. And a turning motor shaft (not shown).

  Pulleys 85 and 86 are fixed to the left and right projecting portions of the traveling pump shaft 83. Of these pulleys 85 and 86, a power transmission belt 87 is provided between a pulley 85 on the side (left side) close to the grain feeder 15 and a pulley (not shown) fixed to the output shaft of the engine 11. It is wrapped around. Further, a power transmission belt 89 is wound around a pulley 86 on the opposite side (right side) of the travel pump shaft 83 to the grain feeder 15 and a pulley 88 fixed to the protruding portion of the turning pump shaft 84. It is hung.

  Therefore, in the present embodiment, the power from the engine 11 is input to the traveling pump shaft 83 of the traveling hydraulic drive means 81 via the pulley 85 and the belt 87 transmission system, and from the traveling pump shaft 83 to the pulley Power is transmitted to the turning pump shaft 84 of the turning hydraulic drive means 82 via 86 and 88 and the belt 89 transmission system.

  In both the traveling and turning hydraulic drive means 81 and 82, the pressure oil is appropriately sent from the hydraulic pump to the hydraulic motor by the power transmitted to the pump shafts 83 and 84. Then, the inclination angle of the rotary swash plate in the hydraulic pump is adjusted according to the operation amount of the steering round handle 9 and the accelerator lever (not shown) provided in the operation unit 8, and the hydraulic oil is discharged to the hydraulic motor. By changing the direction and the discharge amount, the rotation direction and the number of rotations of the traveling motor shaft and the turning motor shaft, and thus the driving speed and driving direction of the traveling crawler 2 are arbitrarily adjusted.

(5). Configuration of Cover Body and Guide Member Next, the configuration of the cover body and the guide member according to the present invention will be described with reference to FIGS. 4 and 6.

  As shown in FIG. 4, a bearing portion 91 protruding upward is integrally provided in the middle portion of the vertical transmission pipe 27. A lower right conveyance drive shaft 61 is rotatably supported on the bearing portion 91. In the bearing portion 91, a bevel gear mechanism 60 for branching and transmitting power from the vertical transmission shaft 52 in the vertical transmission pipe 27 to the lower right conveyance drive shaft 61 is provided. A drive sprocket 62 is fixed to the tip of the lower right transport drive shaft 61, and a feed end portion of the lower right transport chain 43 is wound around the drive sprocket 62.

  Cover bodies 92 and 93 for preventing the harvested cereal wrapping around the drive sprocket 62 and the lower right transport chain 43 are disposed on both sides of the drive sprocket 62. In other words, the drive sprocket 62 is sandwiched from above and below by the two cover bodies 92 and 93.

  The upper cover body 92 is formed in a substantially half-moon shape in plan view covering the upper surface of the drive sprocket 62 and the inner peripheral side of the feed end portion in the lower right transport chain 43. The upper cover body 92 of the present embodiment is integrally provided by welding or the like on a scraping frame 94 that is detachably connected to the longitudinal transmission pipe 27 so as to protrude obliquely upward in the forward direction. Although not shown in detail, a central star wheel 41 is rotatably attached to the tip of the scraping frame 94. A convex curved edge portion 92 a of the upper cover body 92 facing the stock transport path 90 has a shape that follows the movement locus of the lower right transport chain 43.

  A guide roller 69 is rotatably supported on the upper cover body 92, and the feed terminal portion of the lower right transport chain 43 is also wound around the guide roller 69. As with the drive sprocket 62, the guide roller 69 is also sandwiched from above and below by two cover bodies 92 and 93. Needless to say, the guide roller 69 corresponds to the transmission vehicle described in the claims.

  On the other hand, the lower cover body 93 is formed in a substantially L-plate shape in plan view so as to surround the upstream side in the feed direction of the lower right transport drive shaft 61 protruding upward from the bearing portion 91 of the longitudinal transmission pipe 27. 91 is detachably fastened with bolts at a position upstream in the feed direction. Further, the convex curved edge portion 93 a of the lower cover 93 facing the stock transport path 90 has a shape along the movement locus of the lower right transport chain 43.

  In addition, although the upper and lower cover bodies 92 and 93 of this embodiment are made of a metal plate, the present invention is not limited to this and may be made of a synthetic resin.

  The side edge portion on the upstream side in the feed direction of the lower cover body 93 is a bent edge portion 93b that is bent upward, and this bent edge portion 93b joins at a location adjacent to the left and right lower transport chains 43 and 44. A plate spring guide member 95 that guides the stock base portion of the three cropped cereal grains (hereinafter referred to as the combined cereal grains) toward the vertical conveying chain 47 located on the downstream side in the feed direction is bolted.

  The guide member 95 is formed in a long and thin plate shape that extends from below the feed end portion of the lower right transport chain 43 to the vicinity of the feed start end portion of the vertical transport chain 47, and has a free end side (rear end side) in plan view. It has a corrugated shape along the feed end portion of the lower left transport chain 44.

  Since the guide member 95 is made of a leaf spring having elasticity, the guide member 95 is elastically deformed in a direction in which the guide member 95 comes in contact with and separates from the feed terminal portion of the lower left transport chain 44 according to the number of the merging grains. As a result, the stocked portion of the combined cereal rice bran is sandwiched between the guide member 95 and the feed end portion of the lower left transport chain 44, and is smoothly guided (guided) toward the vertical transport chain 47 in this state. Become. Thereby, generation | occurrence | production of conveyance disorder | damage | failure, a spillage, etc. of a corn kernel can be prevented effectively.

  In particular, in this embodiment, the lower cover body 93 is attached to the bearing portion 91 of the vertical transmission pipe 27, and a guide member 95 is provided on the lower cover body 93. That is, the guide member 95 is supported by the vertical transmission pipe 27 via the lower cover body 93.

  For this reason, even if the left and right lower transport chains 43, 44 are pushed outward in the left-right direction due to a large amount of the combined cereal meal, even if the lower transport chains 43, 44 are twisted, the twist is caused by the guide member 95. The guide member 95 can stably maintain its posture. As a result, it is possible to more reliably prevent the occurrence of turbulent conveyance and spillage of the combined corn straw.

  The guide member 95 may be attached to the upper cover body 92, and it is sufficient that it is at least one of them. It is also possible to attach a guide member 95 to each of the cover bodies 92 and 93. Further, the guide member 95 is not limited to a leaf spring but may be configured so as to be movable in a direction in which the guide member 95 comes in contact with or separates from the feed terminal portion of the lower left transport chain 44 in accordance with the number of merging grains. (For example, another elastic body may be used, or a combination of a thin metal plate and a spring may be used).

(6). According to the above configuration, the drive sprocket 62 and the guide roller 69 around which the feed end portion of the lower right transport chain 43 is wound are sandwiched between the upper and lower cover bodies 92 and 93. Due to the presence of the bodies 92, 93, the harvested cereal grains being transported are less likely to be entangled with the drive sprocket 62, the lower right transport drive shaft 61, the guide roller 69, its support shaft, and the lower right transport chain 43. Become). For this reason, it is possible to effectively prevent the harvested cereal from being wound around the drive sprocket 62 and the like, and thus from being clogged.

  Moreover, the lower cover body 93 is provided with a guide member 95 that guides the stock portion of the combined cereal mash toward the longitudinal conveying chain 47 on the downstream side in the feed direction, so that the guide member 95 itself also includes the drive sprocket 62 and the like. On the other hand, it plays a role of suppressing the entanglement of the harvested cereal meal from below. That is, the guide member 95 can exhibit not only a function of guiding (guiding) the harvested cereal but also a function of preventing winding similar to that of the lower cover body 93. Therefore, the harvested cereal wrapping around the drive sprocket 62 and the like, and as a result, clogging of the harvested cereal meal can be more reliably prevented, and the efficiency of conveying the harvested cereal meal can be improved.

  Further, since the lower cover body 93 for preventing wrapping also serves as a mounting seat for mounting the guide member 95, it is not necessary to separately provide a mounting member. This contributes to the suppression of the number of parts.

  Further, the lower cover body 93 is detachably attached to the bearing portion 91 of the longitudinal transmission pipe 27, while the upper cover body 92 is detachably attached to the longitudinal transmission pipe 27 so as to protrude obliquely upward to the front. The scraper frame 94 is integrally provided. For this reason, when assembling (manufacturing) the relay conveyance device, for example, the lower cover body 93 with the guide member 95 is fastened to the bearing portion 91 of the vertical transmission pipe 27, and then the lower right conveyance chain 43 is wound around the drive sprocket 62. After that, the scraping frame 94 may be connected to the vertical transmission pipe 27.

  Accordingly, it is possible to save the trouble of attaching the upper cover body 92 alone, and it is not necessary to adjust the positional relationship between the upper cover body 92 and the drive sprocket 62 one by one. . In addition, it is possible to reduce the number of steps for assembling the relay conveyance device in the combine production line, and to contribute to the reduction of the manufacturing cost.

(7). Others The present invention is not limited to the above-described embodiment, and can be embodied in various forms. For example, the relay transfer device is not limited to the combination of the left and right lower transfer chains 43 and 44, and may be a combination of the left and right upper transfer tines 45 and 46. Therefore, the first and second endless belt mechanisms are not limited to the chain type and may be a belt type. The transmission vehicle is not limited to a sprocket, but can be a roller.

  If the present invention is combined with the structure that allows the guide roller 69 to move toward and away from the lower right transport chain 43, it is easier to remove the harvested cereals that are clogged near the junction. .

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

It is a side view of a combine to which the present invention is applied. It is a top view of a combine. It is a schematic front view which shows the support structure of a cutting pretreatment apparatus. FIG. 4 is a side view taken along the line IV-IV in FIG. 3 with some members omitted. It is a skeleton figure which shows the power transmission system of a cutting pre-processing apparatus. It is a schematic plan view which shows the arrangement | positioning relationship between each apparatus in a cutting pre-processing apparatus, a cover body, and a guide member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling machine body 3 Cutting pretreatment apparatus 10 Operation part 11 Engine 13 Cutting blade apparatus 14 Grain raising apparatus 15 Grain conveying apparatus 27 Vertical transmission pipe 43 as a cutting frame 43 Lower right conveying chain 44 as a second endless belt mechanism 1st Lower left transport chain 45 as an endless belt mechanism Upper right transport tine 46 Upper left transport tine 47 Vertical transport chain 48 Tip transport tine 52 Vertical transmission shaft 60 Bevel gear mechanism 61 Lower right transport drive shaft 62 Drive sprocket 69 as a transmission vehicle Transmission vehicle Guide roller 90 Stock transport path 91 Bearing 92 Upper cover body 93 Lower cover body 94 Scratching frame 95 Guide member

Claims (2)

A combine in which a cutting pretreatment device having a relay transfer device is attached to the front portion of the traveling machine body so that the lifting and lowering can be adjusted by the lifting and lowering actuator,
The relay conveyance device conveys the harvested cereal mash that has been harvested from one of the plurality of strips, and the first endless strip mechanism that transports the chopped cereal that has been harvested from the other strip. A second endless belt mechanism that merges in the vicinity of the feed terminal portion of
Cover bodies for preventing the transmission wheel and the second endless belt mechanism from being wrapped with the harvested cereal meal are disposed on both sides of the transmission wheel around which the feed end portion of the second endless belt mechanism is wound. A guide for guiding the plurality of reaped grain mashes joined in the vicinity of the feed end portion of the first endless belt mechanism further toward the downstream side in the feed direction. Members are provided,
Combine. One cover body of the two cover bodies is detachably attached to the middle part of the cutting frame that projects diagonally forward and downward from the traveling machine body, while the other cover body projects diagonally upward and forward. Is provided integrally with the scraping frame detachably attached to the cutting frame,
The combine according to claim 1.

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