JP5139900B2 - Cutting and harvesting structure of a harvesting and harvesting machine - Google Patents

Description

  In the present invention, a plurality of weeding members that divide crop cereals for each cropping row are arranged at predetermined intervals in the left-right direction, and are introduced between two adjacent weeding members between them. By installing a pulling device that causes culling of crops, a predetermined number of pulling frames are formed in the cutting and conveying unit, and the culm caused by the pulling device is scraped into the pulling frame in the pulling frame. The present invention relates to a harvesting and transporting structure for a harvesting and harvesting machine, which includes a scraping and transporting device that transports the harvesting and includes a harvesting device that harvests the culm caused by the pulling device in the harvesting and transporting unit.

As the harvesting and transporting structure of the harvesting and harvesting machine as described above, a rotary body (auxiliary transport apparatus) provided with a plurality of projecting portions for scraping and transporting in the scraping and transporting apparatus, and a rotational center side of the rotating body are covered. Some of them are equipped with a cover that prevents the wrapping of the cereals around the rotating body. In the cutting and transporting structure having such a configuration, when the scraping and transporting device is viewed from the direction perpendicular to the plane of the scraping and transporting device, the cover is positioned on the front side of the vehicle body with respect to the tip of the cutting blade of the cutting device. As described above, a scraping and conveying apparatus is configured (see, for example, Patent Document 1).
JP 2007-289027 A

  By the way, it is common to employ | adopt what is provided with the rubber | gum rake belt which integrally formed the several protrusion part for rake conveyance as the rotation body of an rake conveyance apparatus. Therefore, when the rotating body acts on the crop culm before cutting, the protrusion of the scraping belt deforms losing the strength of the culm before cutting, until the culm is harvested. During that time, the cereals cannot be scraped and conveyed by the rotating body toward the cereal passing part.

  In such a case, if the cover of the take-up conveyance device is configured to be positioned on the front side of the vehicle body relative to the tip of the cutting blade of the reaping device, the cover is not cut before the vehicle is traveling. The cedar is touched and bent toward the advancing direction of the vehicle body.

  Then, when the culm of the crop pushed and bent in this way reaches the cutting position of the cutting device and is cut, it tries to return to the straight state from the pushed and bent state toward the traveling direction of the vehicle body with the cutting. Due to the restoring action to be performed, the vehicle may jump out in the traveling direction of the vehicle body away from the picking-up transport device and deviate from the transport region of the picking-up transport device.

  Even if such a phenomenon occurs during a normal mowing operation, the cereals that have deviated from the transport region of the scraping transport device are successively introduced toward the transport region of the scraping transport device as the vehicle travels. Since the culms are pushed back into the transport area of the scraping and transporting device, they can be scraped and transported toward the culm passing section by the scraping and transporting device.

  However, when the above-mentioned phenomenon occurs immediately before the turning turning to interrupt the cutting and conveying by the cutting and conveying unit, or at the time of the cutting operation at the corner of the farm field where the amount of cutting and conveying of the cereal by the cutting and conveying unit is small, The cereals that have fallen out of the transfer area of the scraping transfer device can no longer be pushed back into the transfer area, resulting in frequent occurrence of cereals that fall out of the transfer area.

  An object of the present invention is to prevent frequent occurrence of cereals spilling from the conveying region of the rake conveying device due to the cover of the rake conveying device coming into contact with the culm before cutting. .

In order to achieve the above object, in the invention according to claim 1 of the present invention,
A plurality of weeding members that divide crop cereals into different cropping rows are arranged at predetermined intervals in the left-right direction, and between two adjacent weeding members, crop grains introduced between them By equipping a pulling device that causes wrinkles, a predetermined number of pulling frames are formed in the cutting and conveying section,
The pulling frame is provided with a scraping and transporting device that scrapes and transports the cereal caused by the pulling device to a predetermined culm passing portion,
A cutting and harvesting structure of a harvesting and harvesting machine provided with a harvesting device that harvests cereal grains caused by the pulling device in the harvesting and conveying unit,
The scraping and transporting device is equipped with a rotating body having a plurality of protrusions for scraping and transporting, and a cover that covers the rotating center side of the rotating body,
The scraping / conveying device so that the cover is positioned on the rear side of the vehicle body with respect to the tip of the cutting blade of the reaping device when the scraping / conveying device is viewed from a direction perpendicular to the plane of the scraping / conveying device. configure the,
The reaping device is configured in a straight line shape in the left-right direction along the left-right direction of the vehicle body so as to span the weeding members located at both the left and right ends of the reaping conveyance unit,
Of the pair of left and right pulleys provided in the rotating body, the pulling pulley whose side is away from the grain passing portion is located at the side away from the grain passing portion in the frame of the pulling frame. It is configured to be located laterally outside the left and right side ends of the device,
When the scraping / conveying device is viewed from a direction perpendicular to the plane of the scraping / conveying device, the entire scraping / conveying region located on the front side of the vehicle body relative to the pair of pulleys in the rotating body is true of the reaping device. It was configured to be located above .

  According to this characteristic configuration, the cover can be prevented from coming into contact with the culm before cutting as the vehicle travels. It can suppress that it is pushed and bent toward the advancing direction, and it suppresses that the pushed and bent cereals come off from the conveyance area of the rake conveying device together with the mowing due to the pushing and bending. be able to.

  Therefore, it is possible to prevent frequent occurrence of cereals spilling from the transport area of the rake transporter due to the cover of the rake transporter coming into contact with the stalks before cutting.

In the invention according to claim 2 of the present invention, in the invention according to claim 1,
An auxiliary member that supports left and right one end sides away from the culm passing part of the scraping conveying device;
The auxiliary member is configured to extend toward the front side of the vehicle body from the left and right end sides of the scraping transfer device .

In the invention according to claim 3 of the present invention, in the invention according to claim 2,
The auxiliary member is configured to be disposed on the upper side of the cover in the scraping and conveying apparatus .

In the invention according to claim 4 of the present invention, in the invention according to claim 2 or 3,
The auxiliary member is disposed at a position laterally outer than the left and right side ends of the pulling device in the frame of the pulling frame.

In the invention according to claim 5 of the present invention, in the invention according to any one of claims 2 to 4,
The auxiliary member is disposed at a position overlapping the divider provided in the weeding member disposed on the left and right end sides of the scraping and conveying device and the vehicle body in the front-rear direction.

In the invention according to claim 6 of the present invention, in the invention according to any one of claims 2 to 5,
The front end of the auxiliary member is configured to be supported by a weeding member provided on the left and right end sides of the scraping transport device.

In the invention according to claim 7 of the present invention, in the invention according to any one of claims 2 to 6 ,
A supporting member that supports the pulling device on a weeding member disposed on the left and right end sides of the scraping conveying device;
The front end of the auxiliary member is supported by the support member.

In the invention according to claim 8 of the present invention, in the invention according to any one of claims 1 to 7 ,
Equipped with a rotating body with a plurality of protrusions for scraping transport to the scraping transport device,
The front end of the locus drawn by the tip of the projecting portion of the rotating body coincides with or substantially coincides with the tip of the cutting blade in the longitudinal direction of the vehicle body when the scraper transport device is viewed from a direction perpendicular to the plane of the scraper transport device. as to, and it constitutes the scraping conveyor device.

  According to this characteristic configuration, it is possible to prevent the protruding portion of the rotating body from acting on the cereal before cutting, and thereby the pestle before cutting is pushed down by the protruding portion of the rotating body. It is possible to suppress the occurrence of inconveniences such as disturbance of the carrying posture of the cereal, or deterioration of the durability of the rotating body due to contact with the cereal before cutting.

  Moreover, the culm immediately after cutting can be scraped and conveyed quickly toward the culm passing part by the protruding part of the rotating body, thereby improving the squeezing and conveying efficiency of the culm by the scraping and conveying device. In addition, it is possible to prevent disturbance in the posture of the grain culm due to the conveyance delay.

  Therefore, it is possible to prevent a decrease in the durability of the rotating body and a decrease in the grain recovery rate due to the disorder in the conveying posture of the culm while improving the efficiency of the squeezing and conveying of the cereal by the scraping and conveying device. .

In the invention according to claim 9 of the present invention, in the invention according to any one of claims 1 to 8 ,
Formed in the state where the two pulling frames are arranged side by side in the cutting and conveying unit,
In each of the pulling frames, the left and right intervals between two adjacent weeding members are set so that up to two crops can be introduced between them, and located between those weeding members. the inking unit, and configured to be causes of culms up two rows, each of the causes frame, by configured for two rows causing culms up Article 2, the reaper transport unit The harvesting and transporting structure of the harvesting and harvesting machine according to any one of claims 1 to 8 , wherein the harvesting and harvesting machine is configured to have a two-frame four-strip cutting specification in which a maximum of four crops are trimmed by the two right and left pulling frames .

According to this feature configuration, crop culling with a larger number of crops than the number of pull-up frames formed in the cutting and conveying unit can be caused during work travel.

  Therefore, the cutting and conveying structure can be simplified and the cost required for the cutting and conveying structure can be reduced.

  Hereinafter, as an example of the best mode for carrying out the present invention, an embodiment in which the harvesting and transporting structure of a harvesting and harvesting machine according to the present invention is applied to a self-removing combine that is an example of a harvesting and harvesting machine, based on the drawings. explain.

  FIG. 1 shows the entire left side of the self-detaching combine, FIG. 2 shows the entire plane, and FIG. 3 shows the entire front. As shown in these drawings, the self-removing combine exemplified in this embodiment has a boarding operation unit 2 formed on the right side of the front portion of the traveling vehicle body 1. On the left side of the front part of the traveling vehicle body 1, a cutting and conveying unit 3 that harvests and conveys crop straw of crops C such as paddy rice and wheat as the vehicle travels is connected to be swingable up and down. In the left half of the traveling vehicle body 1, a threshing device 4 that performs a threshing process on the cereals from the cutting and conveying unit 3 is mounted. The rear portion of the threshing device 4 is connected to a waste straw processing device 5 that discharges the waste straw that is the cereal straw after the threshing processing to the outside of the vehicle. On the right side of the rear part of the traveling vehicle body 1, a grain tank 6 for storing single grains from the threshing device 4 is mounted. The grain tank 6 is equipped with a screw conveying type grain discharging device 7 that discharges and conveys the single-grained grains stored inside thereof to the outside of the vehicle.

  As shown in FIGS. 1 to 4, the traveling vehicle body 1 is integrally equipped with power from an engine 9 mounted on a vehicle body frame 8 in a belt type transmission device 10 and a transmission case (hereinafter abbreviated as T / M case) 11. The hydrostatic continuously variable transmission (hereinafter abbreviated as HST) 12 and a traveling transmission system (not shown) provided inside the T / M case 11 are provided at the lower portion of the vehicle body frame 8. It is configured to transmit to a pair of left and right crawlers 13A, 13B provided.

  Although illustration or reference numerals are omitted, the vehicle body frame 8 is connected to a base frame frame formed by a plurality of side members and cross members made of square pipes, and a large number of reinforcing members and support members made of various steel materials. It is configured. The engine 9 is water-cooled, and is disposed with a radiator on the right side portion of the front portion of the body frame 8. The T / M case 11 has a left and right divided structure, and is disposed at the left and right center side portion of the front portion of the body frame 8. Inside the T / M case 11, a pair of left and right side brakes for braking the corresponding crawlers 13A and 13B are provided. The HST 12 is located above the left case in the T / M case 11 and transmits the power after the shift to the traveling transmission system for traveling. The traveling transmission system includes a pair of left and right side clutches that intermittently transmit power to the corresponding crawlers 13A and 13B. The left and right crawlers 13A and 13B are operated by the power transmitted through the corresponding side clutch, and are braked by the operation of the corresponding side brake. The pair of left and right side clutches and side brakes are configured to be hydraulically operated.

  Incidentally, in the traveling vehicle body 1, a gear-type transmission device is provided inside the T / M case 11 instead of the HST 12, and the power from the engine 9 is transmitted to the belt-type transmission device 10, the gear-type transmission device, and the side clutch, It may be configured to transmit to the left and right crawlers 13A and 13B via the above. Further, a sub-transmission device that shifts the power after shifting by the HST 12 may be provided in the traveling transmission system.

  As shown in FIGS. 1 to 3, the boarding operation unit 2 is provided with a front panel 14, a side panel 15, an engine cover 16, and the like on the front right side of the vehicle body frame 8, and can get on and off from the right side of the vehicle body. It is formed so that The front panel 14 is equipped with a cross swing type neutral return type control lever 17 and the like. The side panel 15 is equipped with a swinging type and position maintaining type transmission lever 18 and the like. The engine cover 16 is equipped with a driver seat 19.

  As shown in FIGS. 1-7, the cutting conveyance part 3 is attached to the cutting frame 20 connected with the front left side of the vehicle body frame 8 so that raising / lowering swinging is possible, three weeding members 21A-21C, and a pair of left and right pulling devices 22A. , 22B, a clipper type mowing device 23, a pair of left and right scraping and conveying devices 24A and 24B, a supply conveying device 25, and the like. And three weeding members 21A-21C are arrange | positioned at predetermined intervals in the left-right direction, and between two adjacent ones of these weeding members 21A-21C, right and left corresponding raising apparatus 22A, By arranging 22B, a pair of left and right pulling frames 26A and 26B are formed in the front part of the cutting and conveying unit 3.

  The three weeding members 21 </ b> A to 21 </ b> C are located at the left weeding member 21 </ b> A located at the left end of the cutting and conveying unit 3, the right weeding member 21 </ b> B located at the right end of the cutting and conveying unit 3, and between them. It is the middle weed member 21C, and the cereal of the crop C corresponding to the traveling of the vehicle body is divided for each cropping line. The left and right pulling devices 22 </ b> A and 22 </ b> B cause a crop culm introduced between the corresponding weeding members 21 </ b> A to 21 </ b> C. The reaping device 23 reaps the crop culm caused by the left and right pulling devices 22A and 22B. The left and right scraping and transporting devices 24A and 24B scrape and transport the cereals located in the transporting area to the culm passing part 27 provided in the left and right central part of the cutting and transporting unit 3. The supply / conveyance device 25 supplies and conveys the cereal of the culm passing portion 27 toward the threshing device 4 while changing the posture to a sideways posture for threshing.

  As shown in FIG. 4, the power from the engine 9 is transmitted to the cutting and conveying unit 3 through the belt type transmission device 10, the input shaft 28 of the HST 12, the belt tension type cutting clutch 29, and the like.

  In addition, although illustration is abbreviate | omitted, you may comprise so that the power after the gear shift by HST12 may be transmitted to the cutting conveyance part 3. FIG. Also, a transmission dedicated for harvesting conveyance is provided, and the power from the engine 9 is harvested and conveyed via the belt-type transmission 10, the input shaft 28 of the HST 12, the transmission dedicated for harvesting conveyance, the harvesting clutch 29, and the like. You may comprise so that it may transmit to the part 3. FIG. Incidentally, a gear-type transmission, HST, or the like can be adopted as a transmission dedicated for harvesting and conveying.

  As shown in FIGS. 1 to 10, the cutting and conveying unit 3 swings up and down by the operation of a lifting cylinder 30 that extends between the vehicle body frame 8 and the cutting frame 20. A single-acting hydraulic cylinder is adopted as the lifting cylinder 30.

  Although illustration is omitted, the control lever 17 is linked to the lifting cylinder 30 via a hydraulic control system for lifting and lowering so that the operation of the lifting cylinder 30 is controlled based on the swinging operation in the front-rear direction. is there. Accordingly, by operating the control lever 17 to swing back and forth, the cutting and conveying unit 3 can be swung up and down over the lower limit side work area and the upper limit side non-work position. In the work area, the cutting height adjustment for adjusting the height position of the cutting device 23 with respect to the crop C to be harvested can be performed.

  Further, the control lever 17 is controlled via a steering hydraulic control system so that the operation of the left and right side clutches and the side brakes according to the operation direction is controlled based on the swing operation in the left and right direction. It is linked to the left and right side clutches and side brakes. The shift lever 18 is linked to the shift operation shaft of the HST 12 via a linkage mechanism so that the HST 12 operates based on the swing operation. Thus, by swinging the speed change lever 18, the left and right crawlers 13A and 13B can be switched steplessly between a stopped state, a forward drive state, and a reverse drive state. In each of the forward drive state and the reverse drive state, the drive speeds of the left and right crawlers 13A and 13B can be changed steplessly. In the forward drive state or the reverse drive state, the steering lever 17 is swung in the left-right direction to change the traveling state between the straight-ahead state in which the left and right crawlers 13A and 13B are driven at a constant speed and the clutch operation. It is possible to switch between a slow turning state in which 13A and 13B are differentiated and a sudden turning state in which one of the left and right (turning inside) crawlers 13A and 13B is braked.

  As shown in FIGS. 1 to 3, the threshing device 4 receives the stock side of the cereals conveyed by the cutting and conveying unit 3 by the holding and conveying mechanism 31 provided on the left side thereof, and the tip side of the cereals is In order to be supplied to the inside of the threshing device 4, the culm from the cutting and conveying unit 3 is nipped and conveyed toward the rear waste straw treatment device 5. And although illustration is abbreviate | omitted, with the handling cylinder with which the inside of the threshing apparatus 4 was provided, the threshing process was given to the tip side of the corn straw supplied to the inside, the sieve type | formula provided with the inside of the threshing apparatus 4, a wind type, etc. The sorting process is applied to the processed product obtained by the threshing process. The single grain obtained by this sorting process is collected by the first collection unit and conveyed toward the grain tank 6. Non-single-grained grains are collected by the second collecting unit and subjected to a rethreshing process and a re-sorting process. Dust such as cut straw and straw waste is discharged out of the vehicle through a dust outlet formed at the rear end of the threshing device 4. The sandwiching and conveying mechanism 31, the handling cylinder, the sorting mechanism, and the like provided in the threshing device 4 are operated by the power from the engine 9 that is transmitted via a threshing clutch or the like.

  As shown in FIG. 1, the waste straw processing device 5 receives the waste straw that is the cereal cereal after the threshing processing carried out from the threshing device 4 by the pinching transport mechanism 31 by the waste straw transport mechanism 32 provided in the upper part thereof. Then transport it backwards. And although illustration is abbreviate | omitted, the waste straw is the long straw discharge state which discharges outside with the length of a car, and the shredded discharge state which cuts out with the disk cutter provided inside, and discharges outside. It is configured to enable switching of the waste wall discharge form. The waste straw transporting mechanism 32 and the disc cutter are operated by power from the engine 9.

  As shown in FIGS. 1 and 3, the grain tank 6 stores single-grained grains from the threshing device 4 conveyed by the lifting conveyor 33. Although illustration is omitted, the lifting conveyor 33 is operated by power from the engine 9. The grain discharging device 7 is discharged by the power from the engine 9 transmitted via the discharge clutch, and the operation stores the grain stored in the grain tank 6 at a predetermined position outside the vehicle (for example, a truck bed). To discharge.

  As shown in FIGS. 1 and 4 to 10, the cutting frame 20 includes a left and right fulcrum member 34 serving as a swing fulcrum at the time of up-and-down swing at the rear end. An extension member 35 that extends toward the front lower side of the traveling vehicle body 1 is connected to the fulcrum member 34. An intermediate member 36 located at the bottom of the cutting and conveying unit 3 is connected to the extending end of the extending member 35 in the left-right direction. The left weed member 21A is connected to the left end portion of the intermediate member 36 so as to extend forward from the left end portion, and extends from the left end portion toward the upper portion of the left pulling device 22A. A support member 37 is erected. The right weed member 21B is connected to the right end portion of the intermediate member 36 so as to extend from the right end portion. The intermediate weed member 21C is connected to the right side portion of the intermediate member 36 so as to extend forward from the right side portion.

  Inside the fulcrum member 34, an input shaft 39 that rotates integrally with the output pulley 38 of the cutting clutch 22 is provided. Inside the extending member 35, a transmission shaft 41 that interlocks with the input shaft 39 via a pair of bevel gears 40 is provided. Inside the intermediate member 36, a relay shaft 43 interlocked with the transmission shaft 41 via a pair of bevel gears 42, a power distribution shaft 45 interlocked with the relay shaft 43 via a pair of bevel gears 44, and the like are provided. Inside the support member 37 is provided with a left transmission shaft 47 that is linked to the power distribution shaft 45 via a pair of bevel gears 46. At the right end portion of the intermediate member 36, a right transmission shaft 49 that interlocks with the power distribution shaft 45 via a pair of bevel gears 48 is erected so as to extend toward the upper and lower intermediate portions of the right pulling device 22B. is there.

  As shown in FIGS. 5 to 8, the left weed member 21 </ b> A is equipped with a left divider 51 </ b> A made of sheet metal at the front end of the left weed pipe 50 </ b> A extending forward from the left end of the intermediate member 36, and cutting It is configured to be positioned at the left end of the transport unit 3. The right weeding member 21B includes a rightward extending portion extending from the right end portion of the intermediate member 36 toward the right side and a forward extending portion extending forward from the extending end. A right divider pipe 51B made of sheet metal is provided at the front end of the right weed pipe 50B formed in an L shape, and the forward extending portion of the right weed pipe 50B and the right divider 51B are connected to the right end of the cutting and conveying section 3. It is comprised so that it may be located in a part. The middle weed member 21 </ b> C is equipped with a middle divider 51 </ b> C made of sheet metal at the front end of the middle weed pipe 50 </ b> C extending forward from the right side portion of the intermediate member 36, so The middle divider 51C is located at a substantially intermediate position between the left divider 51A and the right divider 51B. Each weeding member 21A to 21C has a predetermined interval in the left-right direction so that up to two crops C can be introduced between two adjacent weeding members 21A, 21C or 21B, 21C. Opened up. Further, when the cutting and conveying unit 3 is positioned in the work area, the posture thereof is set to be a horizontal posture or a substantially horizontal posture.

  In addition, as shown in FIG. 11, you may make it equip each weed member 21A-21B with the dividers 51X-51Z comprised so that elastic deformation was possible with the rubber hose.

  According to this structure, even if it is a case where the cutting height of the grain straw by the cutting conveyance part 3 is set to the minimum, it can avoid that the inconvenience which each divider 51X-51Z thrusts into the ground arises. Further, by using the elastic deformation of the dividers 51X to 51Z, the cutting and conveying unit 3 can be applied to the culm of the crop C located closer to the culm. As a result, the amount of crop C remaining after cutting by this combine harvesting can be reduced, and the labor required for the pillow handling operation to manually cut the cereal of the crop C remaining and manually supply it to the threshing device 4 is reduced. Can be made.

  By the way, the left divider 51X has one end fitted to the front end of the left weed pipe 50A and the other end supported by the left pulling device 22A, so that the corresponding crop C grain culm is planted. It is configured to have shape retention that can be divided into two types. One end of the right divider 51Y is externally fitted to the front end of the right weed pipe 50B, and the other end is supported by the right pulling device 22B, thereby dividing the corresponding crop C grains into different cropping lines. It is configured so as to have a shape-retaining property. The middle divider 51Z has one end fitted to the front end of the middle weed pipe 50C, and the other end is fixed to the middle weed pipe 50C, thereby dividing the corresponding crop C grains into different cropping lines. It is configured so as to have a shape-retaining property.

  As shown in FIGS. 4 to 6, 9, 10, and 12, the left and right pulling devices 22 </ b> A and 22 </ b> B are configured to be symmetrical. More specifically, the left and right pulling devices 22A and 22B include input shafts 53A and 53B above the pulling cases 52A and 52B. In each of the pulling cases 52A and 52B, there are driving sprockets 54A and 54B rotating integrally with the input shafts 53A and 53B, tension sprockets 55A and 55B adjacent to the lateral sides of the driving sprockets 54A and 54B, and the pulling cases 52A and 52B. The first guide rollers 56A and 56B and the second guide rollers 57A and 57B disposed at the lower portion, and endless chains 58A and 58B that are swung over them are provided. Each endless chain 58A, 58B is provided with a plurality of raising claws 59A, 59B arranged at a constant pitch. The pulling claws 59A, 59B are endless in a retracted posture in which their free ends are located inside the pulling cases 52A, 52B and an acting posture that extends outward from the pulling cases 52A, 52B and acts on the crop C. It swings around the connecting pins 60A, 60B with the chains 58A, 58B as fulcrums. Between the first guide rollers 56A and 56B and the second guide rollers 57A and 57B, first guide rails 61A and 61B for holding the pulling claws 59A and 59B in a downward acting posture are provided. Between the second guide rollers 57A and 57B and the drive sprockets 54A and 54B, second guide rails 62A and 62B for holding the raising claws 59A and 59B in a laterally acting posture are provided.

  The left pulling device 22 </ b> A has its input shaft 53 </ b> A interlocked with the left transmission shaft 47 via a pair of bevel gears 63. By this interlocking, the endless chain 58A rotates clockwise in a front view. By this rotation, each pulling claw 59A moves from the left end side to the left and right center side of the cutting and conveying unit 3 in the area Aa1 where the first guide rail 61A is held in the downward acting posture. Then, the culm of up to two crops C introduced between the left weed member 21 </ b> A and the middle weed member 21 </ b> C is raked and guided toward the left and right center side of the cutting and conveying unit 3. Moreover, in area | region Aa2 hold | maintained by the 2nd guide rail 62A at a horizontal action attitude | position, it moves toward the upper part from the lower end part of the raising case 52A, and this movement causes the culm of the crop C after the rake guidance. .

  The right pulling device 22 </ b> B has its input shaft 53 </ b> B interlocked with the right transmission shaft 49 via a chain transmission mechanism 64 and a pair of bevel gears 65. By this interlocking, the endless chain 58B rotates counterclockwise when viewed from the front. By this rotation, each pulling claw 59B moves from the right end side of the cutting and conveying unit 3 toward the left and right central side in the region Ab1 in which the first guide rail 61B is held in the downward acting posture. Then, the culm of up to two crops C introduced between the right weed member 21 </ b> B and the middle weed member 21 </ b> C is raked and guided toward the left and right center side of the cutting and conveying unit 3. Moreover, in area | region Ab2 hold | maintained by the 2nd guide rail 62B at the horizontal action attitude | position, it moves toward the upper part from the lower end part of the raising case 52B, and this movement causes the grain culm of the crop C after rake guidance. .

  That is, the left pulling device 22A is operated by the power transmitted from the input shaft 39 of the cutting and conveying unit 3 through the transmission shaft 41, the relay shaft 43, the power distribution shaft 45, the left transmission shaft 47, and the like. By this operation, a maximum of two crop C grains are introduced between the left weed member 21A and the middle weed member 21C.

  The right pulling device 22B is transmitted from the input shaft 39 of the cutting and conveying unit 3 through the transmission shaft 41, the relay shaft 43, the power distribution shaft 45, the right transmission shaft 49, the chain transmission mechanism 62, and the like. It is configured to cause a maximum of two crop C culms introduced between the right weed member 21B and the middle weed member 21C.

  Further, the left and right pulling devices 22A and 22B are supplied with a plurality of pulling claws 59A and 59B, and the grains C of the crop C introduced between the corresponding ones of the three weeding members 21A to 21C. Guide areas Aa1 and Ab1 for scrambling and guiding toward the left and right central side of the cutting and conveying unit 3 and cause areas Aa2 and Ab2 for causing culling of the crop C which has been scorched and guided are formed.

  Accordingly, the left and right pulling frames 26A and 26B can be configured for two lines that cause a maximum of two grain culms, and the cutting and conveying unit 3 is formed by a pair of left and right pulling frames 26A and 26B. It can be configured to a 2-frame 4-strip cutting specification for harvesting. As a result, as compared with a general three-frame four-line mowing specification cutting and conveying unit configured to harvest four crops C at maximum with four weed members and three pulling devices. The configuration can be simplified and the cost can be reduced while being configured to have a wide working width.

  Further, by forming guide areas Aa1 and Ab1 and raising areas Aa2 and Ab2 in the left and right pulling devices 22A and 22B, the structure of the two-frame four-line specification is simplified, but four crop grains Can cause wrinkles smoothly and well.

  In addition, the archless that does not need to install a heavy shaft transmission mechanism for interlockingly connecting the input and receiving shafts 53A and 53B provided on the upper parts of the left and right pulling devices 22A and 22B. Therefore, the centroid position of the cutting and conveying unit 3 can be lowered as compared with the case of adopting an arch structure in which an axial transmission mechanism is installed over the upper parts of the left and right pulling devices 22A and 22B. This can improve the stability of the vehicle body.

  By the way, although not shown in the figure, when an archless structure is adopted for the cutting and conveying part of the three-frame four-saw cutting specification, the transmission system for the pulling device disposed on the left and right center side of the cutting and conveying part is used as the conveying path for the cereals. It is necessary to arrange at the bottom of the left and right center side of the cutting and conveying unit that is below. If the transmission system is arranged in such a position, foreign matter such as mud and weeds easily accumulates on the transmission system case. Due to this disturbance, the alignment of the tip side when the supply and transport device 25 transports the cereal toward the threshing device 4 becomes worse, and unhandled residue is likely to occur during the threshing process in the threshing device 4. As a result, the grain recovery efficiency is likely to decrease.

  On the other hand, the cutting and conveying unit 3 according to the present invention is a two-frame four-row cutting specification that does not require a pulling device on the left and right center sides while being a four-row cutting, and thus is caused by the accumulation of such foreign matters. A drop in grain recovery efficiency can be avoided in advance.

  As shown in FIGS. 1 to 3, 5 to 7, and FIG. 12, the lower part of the left raising case 52 </ b> A is supported by the left weed pipe 50 </ b> A via the left support member 66 </ b> A. Further, the upper portion is supported by the support member 37. The lower part of the right raising case 52B is supported by the right weed pipe 50B via the right support member 66B. Further, the upper part is connected to the upper part of the left pulling case 52A by an arch-shaped connecting member 67 that extends over the upper part and the upper part of the left pulling case 52A. That is, the upper part of the right pulling case 52B is supported by the support member 37 via the connecting member 67 and the left pulling case 52A. With these support structures, the left and right pulling devices 22A and 22B are mounted on the cutting and conveying unit 3 in a rearward tilt position located on the rear side of the vehicle body as the upper side thereof.

  As the left and right pulling devices 22A and 22B, instead of the structure in which the guide areas Aa1 and Ab1 are formed by scraping and moving the plurality of pulling claws 59A and 59B in the left and right directions, as the vehicle body travels, You may make it employ | adopt the structure formed by the guide member which raises the grain culm of the crop C and slide-guides in the left-right direction toward area | region Aa2, Ab2.

  As shown in FIGS. 4 to 9, the cutting device 23 is supported by the weed pipes 50 </ b> A to 50 </ b> C of the weed members 21 </ b> A to 21 </ b> C. The plurality of movable blades 68 aligned and arranged on the upper side so as to be continuously arranged in the left-right direction are arranged to the left and right with respect to the plurality of fixed blades 69 arranged on the lower side so as to be arranged continuously in the left-right direction. By reciprocatingly sliding in the direction with a constant stroke, the grain culm caused by the left and right pulling devices 22A and 22B is cut off. Each movable blade 68 reciprocally slides with a fixed stroke in the left-right direction with respect to the fixed blade 69 by interlocking with the power distribution shaft 45 via a crank-type cutting blade driving device 70.

  That is, the cutting device 23 is operated by the power transmitted from the power distribution shaft 45 of the cutting conveyance unit 3 via the cutting blade driving device 70, and by this operation, the crop C caused by the left and right pulling devices 22A and 22B is operated. It is configured to reap cereals.

  As shown in FIGS. 4 to 9 and FIG. 13, the left and right scraping and conveying devices 24 </ b> A and 24 </ b> B include a scraping and conveying mechanism 71 </ b> A and 71 </ b> B serving as a rotating body that scrapes and conveys the upper part of the stock side of the grain straw. Packers 72A and 72B as rotating bodies that scrape and transport the lower part of the potato stocker side are arranged up and down, and the transporter 71A and 71B and packers 72A and 72B scrape and transport between them. The guide members 73A and 73B for guiding the cereals to be used are provided. The left and right scraping and transporting mechanisms 71A and 71B are composed of rubber scraping belts 74A and 74B, in which a plurality of projecting portions 74a and 74b for scraping transport are integrally formed at a constant pitch, and large-diameter driving pulleys 75A and 75B. It is configured to rotate over the small-diameter driven pulleys 76A and 76B. Covering the driving pulleys 75A and 75B and the driven pulleys 76A and 76B from above along the belt sides of the scraping belts 74A and 74B, the scraping and transporting mechanisms 71A and 71B are provided above the left and right scraping and transporting mechanisms 71A and 71B. Covers 77A and 77B for preventing the wrapping of the cereals with respect to the The left and right packers 72A and 72B are integrally formed with a plurality of projecting portions 72a and 72b for scraping and transporting on the outer periphery thereof.

  The left picking and conveying device 24A rotates the driving pulley 75A and the packer 72A of the picking and conveying mechanism 71A to the support shaft 78 provided in the support member 37 so as to be positioned on the left and right center side of the cutting and conveying unit 3. It is supported as possible. Further, the left auxiliary member 79A integrally provided at the left end portion of the left support member 66A is arranged such that the driven pulley 76A of the scraping transfer mechanism 71A is positioned at the front end of the drive pulley 75A at the left end portion of the cutting transfer portion 3. It is supported.

  The right drive unit 24B has a cylindrical shaft 80 fitted around the right transmission shaft 49 so that the drive pulley 75B and the packer 72B of the drive transfer mechanism 71B are positioned on the left and right center side of the cutting transfer unit 3. Is equipped. In addition, the driven pulley 76B of the scraping and conveying mechanism 71B is attached to the right auxiliary member 79B integrally provided at the right end of the right support member 66B so that the driven pulley 76B is positioned at the front of the driving pulley 75B at the right end of the cutting and conveying unit 3. It is supported.

  With this support structure, the left and right scavenging and transporting devices 24A and 24B are configured such that, in a state where the cutting and transporting unit 3 is positioned in the work area, the postures of the scavenging and transporting mechanisms 71A and 71B The cutting and transporting unit 3 is equipped with an inclined posture that is located rearward as it is closer to the left and right central sides, and a rearwardly inclined posture, and the postures of the packers 72A and 72B are rearwardly inclined postures. It is.

  As a result, the left and right scraping and conveying devices 24A and 24B are provided on the left and right sides of the cutting and conveying unit 3 by the protruding portions 74a and 74b of the scraping belts 74A and 74B and the protruding portions 72a and 72b of the packers 72A and 72B. While accepting and lifting the grains in the transport area from the lower sides of the left and right sides, they are scraped toward the grain passing section 27, and immediately before the grain passing section 27, the scraped grains are collected. It is scraped into the cereal passing part 27 while receiving and lifting from the front lower side, and in the cereal passing part 27, it is directed to the rear cereal delivery position while receiving and lifting the scraped cereal from the front lower side. Then, the cereal passing part 27 is allowed to pass through.

  As a result, when the left and right scraping and transporting devices 24A and 24B scrape and transport the cereals harvested by the reaping device 23, it is possible to make the stocker side of the cereals less likely to come into contact with the reaping device 23. Thus, due to the contact posture of the cereal being disturbed by the contact, the alignment of the tip side when conveying the cereal toward the threshing device 4 by the supply and transport device 25 becomes worse, and the threshing device 4 In the threshing process, it is possible to avoid a decrease in the grain recovery rate such that unhandled items are easily generated.

As shown in FIGS. 4 to 9 and FIG. 13, the left-side scraping / conveying device 24 </ b> A includes the driving pulley 75 </ b> A and the packer 72 </ b> A so that the driving pulley 75 </ b> A and the packer 72 </ b> A of the scraping / conveying mechanism 71 </ b> A rotate integrally. Are connected. The right-hand drive mechanism 24B connects the drive pulley 75B and the packer 72B to the cylinder shaft 80 so that the drive pulley 75B and the packer 72B of the drive mechanism 71B rotate integrally with the cylinder shaft 80. is there. The cylindrical shaft 80 is interlocked with the right transmission shaft 49 via a gear type reduction mechanism 81. The left packer 72A meshes with and interlocks with the right packer 72B.

  That is, the left and right scraping and conveying devices 24A and 24B are operated by power transmitted from the right transmission shaft 49 via the speed reduction mechanism 81 and the cylinder shaft 80, and by this operation, the cereals harvested by the reaping device 23 are It is configured such that it is scraped and transported toward the cereal passing part 27 which is the meshing part of the left and right packers 72A and 72B, and is scraped and transported from the stalk passing part 27 toward the cereal passing position.

  As shown in FIGS. 1, 2, and 4, the supply and transport device 25 sandwiches and transports the stock side of the cereal that has been scraped and transported to the cereal delivery position by the left and right scraping transport devices 24 </ b> A and 24 </ b> B. The sandwiching and transporting mechanism 82 and the locking and transporting mechanism 83 that locks and transports the tip side of the grain pod are arranged vertically. The holding and conveying mechanism 82 and the locking and conveying mechanism 83 are configured so that the transmission shaft 84 functioning as an input shaft thereof is linked to the input shaft 39 of the harvesting and conveying unit 3 via a pair of bevel gears 85, thereby It is configured to supply and transport the cereals toward the threshing device 4 while changing the posture to the sideways posture for threshing.

  As shown in FIGS. 8 and 13, in the cutting and conveying unit 3, the middle weed member 21 </ b> C is positioned between the valley diameters da and db of the left and right packers 72 </ b> A and 72 </ b> B that are within the left and right width of the culm passing unit 27. It is arranged to do.

  With this arrangement, when the left and right scraping and conveying devices 24A and 24B convey the cereal to the cereal passage section 27, the cereal is prevented from moving across the middle weed member 21C. it can. As a result, compared with the case where the cereals straddle the middle weed member 21C, the stock side of the cereal can be made less likely to come into contact with the middle weed member 21C. Due to the disorder of the conveying posture, the alignment of the tip side when conveying the cereal toward the threshing device 4 by the supply conveying device 25 becomes worse, and unhandled residue is likely to occur in the threshing process in the threshing device 4. It is possible to avoid a decrease in the grain recovery rate.

  In addition, as described above, the left and right scavenging and conveying devices 24A and 24B are configured so that the posture of the scavenging and conveying mechanisms 71A and 71B is the cutting and conveying unit 3 in a state where the cutting and conveying unit 3 is positioned in the work area. The left and right central sides of the packer 72A and the rearwardly inclined posture are rearwardly inclined and the postures of the packers 72A and 72B are rearwardly upward inclined postures. With respect to the middle weed member 21C that assumes a horizontal posture or a substantially horizontal posture when positioned in the area, the lower side in the transport direction is separated from the middle weed member 21C upward. Thereby, it is possible to prevent the cereal straw that has been scraped and conveyed to the cereal passing part 27 by the left and right scavenging and conveying devices 24A and 24B from contacting the middle weed member 21C in the cereal passing part 27, As a result, it is possible to prevent a decrease in the grain recovery rate due to the disturbance in the posture of the grain straws caused by the contact.

  As shown in FIGS. 2, 3, and 14, the left crawler 13 </ b> A located on the anti-boarding operation unit side has the left end portion 13 </ b> Aa that is the end portion on the laterally outer side of the vehicle body being the farthest farthest of the cutting conveyance unit 3. It arrange | positions so that it may correspond with the weeding start end 21Aa of the left weeding member 21A located in the boarding operation part side in the left-right direction. Further, the right crawler 13B located on the boarding operation part side has a right end part 13Ba that is an end part on the laterally outer side of the vehicle body of the right weeding member 21B located on the most boarding operation part side of the cutting and conveying part 3. It arrange | positions so that it may protrude slightly from the weeding start end 21Ba to the right outer side of a vehicle body.

  In other words, the left and right crawlers 13A, 13B have a distance L between the end portions on the laterally outer side of the vehicle body larger than the working width W of the cutting and conveying unit 3 configured to enable the cutting and conveying of up to four items. Thus, they are arranged at predetermined intervals in the left-right direction. As a result, the distance between the left and right crawlers 13A and 13B can be increased, and the wetland performance can be improved without causing a decrease in turning performance by increasing the contact length of each of the crawlers 13A and 13B. it can.

  In addition, the left crawler 13A is prevented from protruding to the left side of the vehicle body from the grass start end 21Aa because the position of the left end portion 13Aa coincides with the weed start end 21Aa of the left weed member 21A in the left-right direction. ing. As a result, the left crawler 13 </ b> A causes the left outer side of the vehicle body to move around when the unmoved crop Cx is present on the left side of the vehicle body, or when the left and right sides of the vehicle body are partially divided such that the uncut crops Cx and Cy are present. It is possible to prevent inconveniences such as stepping on an uncut crop Cx located in the vicinity, or mud approaching an uncut crop Cx located near the left outer side of the vehicle body with the left crawler 13A, It is possible to avoid a decrease in work efficiency due to the trampling and mud gathering.

  On the other hand, the right crawler 13B has its right end portion 13Ba substantially coincided with the weed start end 21Ba of the right weed member 21B in the left-right direction, so that uncut crops Cx, Cy exist on the left and right sides of the vehicle body. During work traveling such as middle splitting, the weed start end 21Ba of the right weed member 21B is located within the work width of the cutting and conveying unit 3 on the side of the most boarding operation unit, and outside the work width adjacent to this crop Cb. If it passes through the side of the crop Cb within the work width with the other crop Cy, the inconvenience of stepping on the uncut crop Cy located near the right outside of the vehicle body with the right crawler 13B Therefore, it is possible to avoid a decrease in work efficiency due to the stepping.

  Incidentally, the protrusion length Lz of the right weeding member 21B on the right crawler 13B from the weeding start end 21Ba to the right outer side of the vehicle body is determined by the right crawler 13B by stepping on the uncut crop Cy near the right outer side of the vehicle body. Can be set to various lengths such as Lz = 1/3 * Sc and Lz = 1/4 * Sc, for example, in relation to the planting interval Sc of the crop C. However, it is preferable to satisfy Lz ≦ 1/6 * Sc. And, as the protrusion length Lz is shorter, mud gathering with respect to the uncut crop Cy near the right outer side of the vehicle body by the right crawler 13B can be suppressed, and the reduction in work efficiency due to the mud gathering is suppressed. be able to. Conversely, the longer the protrusion length Lz, the longer the distance between the left and right crawlers 13A and 13B can be, and the wetland performance can be improved.

  The right crawler 13B is positioned such that its right end portion 13Ba coincides with the weeding start end 21Ba of the right weeding member 21B in the left-right direction, or is located inward of the weeding start end 21Ba of the right weeding member 21B. You may arrange so that. Further, the left crawler 13A may be arranged so that the left end portion 13Aa thereof is located on the inner side of the vehicle body with respect to the weed start end 21Aa of the left weed member 21A. The left end portion 13Aa of the left weeding member 21A is located on the outer side of the body of the left weeding member 21A within a range in which it is possible to prevent the neighboring uncutting crop Cx from being stepped on and to suppress mud approach to the uncut crop Cx. You may arrange | position so that it may be located.

  As shown in FIG. 14, the three weeding members 21 </ b> A to 21 </ b> C have the front end side of the right weeding member 21 </ b> B located at the front lower side of the boarding operation unit 2 at the time of the operation of harvesting the four crops C. Between the rightmost crop Cb in the work width located on the side of the most boarding operation part within the work width of the section 3 and the crop Cy or crop cut mark Cz outside the right work width adjacent to the crop Cb, When the right weed member 21B is aligned with the crop C so as to pass close to the crop Cb within the work width, the middle weed member 21C is located at the left and right center sides within the work width to be acted on. The left weed member 21A passes through an intermediate position or a substantially intermediate position between the two crops Cc and Cd positioned at the position of the cropping transport unit 3 and is located on the farthest boarding operation unit side. Crop C on the left and crop C outside the working width on the left side adjacent to this crop Ca Or between the cutting marks Cz crops, it is arranged so as to pass through the position close to the crop Ca in the working width than their intermediate position.

  That is, at the time of the four-row cutting operation, the front end side of the right weeding member 21 </ b> B with high visibility from the boarding operation unit 2 is positioned at the rightmost position within the work width by being positioned in front of the boarding operation unit 2. The left weed member 21A and the middle weed member 21C having low visibility from the boarding operation unit 2 by moving away from the boarding operation unit 2 by aligning them so as to pass near the right side of the crop Cb to be Without visually recognizing, the crop C can be passed through an appropriate position away from the planting position, and pushing and stepping of the crop C by the weeding members 21A and 21C can be avoided.

  Thereby, even if the lodging of the crop C is intense, each weeding member 21A-21B can be easily and reliably aligned with the appropriate position with respect to the crop C, and each weeding member 21A-21B and left and right The pulling devices 22A and 22B can be used to efficiently raise cereals.

  Further, the middle weed member 21C is introduced into the frame of the left raising frame 26A by passing through an intermediate position or a substantially intermediate position between the two crops Cc and Cd located on the left and right center side within the work width 2. The cereals of the crops Ca and Cc and the cereals of the two crops Cb and Cd introduced in the frame of the right pulling frame 26B are passed through the cereals located just above the middle weed member 21C. It can be located in the left-right symmetrical position on both sides of the part 27, and the distance from the culm passing part 27 of the cereals which become the right and left object can be shortened uniformly.

  Thereby, while the grain culm of each crop C is introduced into the left and right pull-up frames 26A, 26B, the middle weed member 21C has two crops Cc, By greatly deviating from the intermediate position of Cd, the distance from the culm passing portion 27 of the cereal introduced into either one of the left and right pulling frames 26A, 26B becomes unnecessarily long, and either of the left and right scratches is removed. It is possible to prevent a reduction in the conveying efficiency of the cereal straw by the embedded conveying devices 24A and 24B. Further, it is possible to prevent an unnecessary delay in the transportation of the cereals by either one of the left and right scraping and transporting devices 24A, 24B, and the supply and transportation due to the disturbance in the posture of the cereals caused by this delay. The apparatus 25 prevents a reduction in the grain recovery rate such that the alignment of the tip side when conveying the cereal toward the threshing device 4 is poor, and unhandled items are easily generated in the threshing process in the threshing device 4. be able to.

  Moreover, when the left weed member 21A passes near the left side of the leftmost crop Ca within the working width, the front end of the right weed member 21B is always in operation during harvesting of the four crops C. The side needs to be aligned so as to pass near the right lateral side of the crop Cb located at the rightmost position within the working width.

  Thereby, at the time of the work traveling for harvesting the four crops C, the weeding members 21A to 21C can be surely passed through the appropriate positions described above with respect to the crop C. It is possible to improve the workability at the time of the work traveling for harvesting the crop C.

  As shown in FIG. 15, the three weeding members 21 </ b> A to 21 </ b> C are cut and transported by the front end side of the right weeding member 21 </ b> B located in front of the boarding operation unit 2 during the operation of harvesting the three crops C. Right with respect to the right crop harvest Cz so as to pass above the right crop Cb adjacent to the right crop Cb within the work width located on the most boarding operation part side within the work width of the section 3 When the front end side of the weeding member 21B is aligned, the middle weeding member 21C is on the right side between the two crops Cb and Cc located on the right side and the left and right center side within the working width to be acted on. The left weed member 21A passes through a position closer to the crop Cc on the left and right center side than the other crop Cb, and is located on the farthest boarding operation unit side within the work width of the cutting and transporting unit 3 as the action target. Crop Ca on the left side in the working width and the crop on the left side adjacent to this crop Ca Is arranged so as to pass through the intermediate position or substantially intermediate position between the width outside the crop Cx or crop cutting marks Cz.

  In other words, during the three-row cutting operation, the front end side of the right weeding member 21B with high visibility from the boarding operation unit 2 is positioned above the right side cutting mark Cz by being positioned in front of and below the boarding operation unit 2. By positioning so as to pass, the left weed member 21A and the middle weed member 21C, which are less visible from the boarding operation unit 2 by moving away from the boarding operation unit 2, can be seen without cropping them. Therefore, it is possible to avoid pushing down or stepping on the crop C by the weeding members 21A and 21C.

  Thereby, even if the lodging of the crop C is intense, the right weed member 21B and the middle weed member 21C can be easily and reliably aligned at appropriate positions with respect to the crop C, and each weed member 21A. -21B and the left and right pulling devices 22A and 22B can be used to efficiently cause cereals.

  Further, the middle weed member 21C passes near the right side of the crop Cc located on the left and right center side within the work width, so that the two crops Ca and Cc introduced into the frame of the left pulling frame 26A. Of the cereal grains and the cereal grains of one crop Cb introduced into the frame of the right pull-up frame 26B, the leftmost crop Ca from the cereal passage part 27 located directly above the middle weed member 21C Can be made to have the shortest distance from the grain passing section 27.

  Thereby, the conveyance efficiency at the time of carrying out the scraping conveyance of the 3 grains of cereals toward the cereal passing part 27 by the left and right rake conveying devices 24A, 24B can be improved. Further, it is possible to prevent an unnecessary delay in the transportation of the cereals by either one of the left and right scraping and transporting devices 24A, 24B, and the supply and transportation due to the disturbance in the posture of the cereals caused by this delay. The apparatus 25 prevents a reduction in the grain recovery rate such that the alignment of the tip side when conveying the cereal toward the threshing device 4 is poor, and unhandled items are easily generated in the threshing process in the threshing device 4. be able to.

  Moreover, the left weeding member 21A passes through an intermediate position or a substantially intermediate position between the crop Ca located on the left side in the work width and the crop Cx or the crop cut mark Cz outside the left work width. During the operation of harvesting the three crops C, the left weeding member 21A having the lowest visibility from the boarding operation unit 2 is farthest from the planting position of the crop C to be acted on within the working range. Can be positioned.

  Thus, during the operation of harvesting the three crops C, the left weeding member 21A having the lowest visibility from the boarding operation unit 2 can be favorably applied to the crop C to be acted on, and the left It can prevent more reliably that the weeding member 21A is located in the planting position of the crop C to be acted on.

  Incidentally, as a specific arrangement of the three weeding members 21A to 21C for satisfying the positional relationship between the three weeding members 21A to 21C and the crop C described above, the left-right distance Sa between the three weeding members 21A to 21C , Sb and the planting interval Sc of the crop C are arranged such that Sa = Sb = 1.75 * Sc, arrangement where Sa = Sb≈1.75 * Sc, or Sa> Sb and Sa≈1 .75 * Sc and Sb≈1.75 * Sc, and Sa <Sb and Sa≈1.75 * Sc and Sb≈1.75 * Sc are considered. When the four crops C are harvested, the distance La between the left weed member 21A and the leftmost crop Ca within the work width located on the right side of the left weed member 21A is the right weed member 21A and its left side. It is preferable that the distance Lb be larger than the distance Lb from the rightmost crop Cb in the work width located at the position.

  As shown in FIGS. 2, 3, 7, 12, and 13, in the right pulling frame 26 </ b> B that includes the right weed member 21 </ b> B whose front end is positioned in front of the boarding operation unit 2, the pulling frame 26 </ b> B is provided. The two-row pulling device 22 </ b> B provided for is configured such that the raising region Ab <b> 2 is located on the left side away from the boarding operation unit 2.

  Thus, the vehicle body from the boarding operation unit 2 is compared with the case where the right pulling frame 26B is equipped with a two-row pulling device configured such that the raising area Ab2 is positioned on the right side which is the boarding operation unit side. The visibility to the front can be improved, and the visibility from the boarding operation unit 2 to the work place in front of the vehicle body can be improved.

  As shown in FIG. 2, FIG. 3, FIG. 7, FIG. 12 and FIG. 13, the left and right pulling devices 22A and 22B have the left and right widths Wa and Wb of the raising regions Aa2 and Ab2 of a maximum It is formed wide to accommodate the cause. Further, the raising claws 59A, 59B provided in the left and right raising devices 22A, 22B are formed in a long length corresponding to the wide raising areas Aa2, Ab2.

  Accordingly, when the left and right pulling devices 22A and 22B are in a four-row mowing operation that always causes two ridges each, the resistance when the cereals pass through the corresponding trigger areas Aa2 and Ab2 on the left and right is within an allowable range. This can be prevented. As a result, it is possible to smoothly and satisfactorily cause cereals to be caused by the left and right pulling devices 22A and 22B even during the four-row mowing operation.

  In addition, by forming the pulling claws 59A and 59B in a length corresponding to the wide trigger areas Aa2 and Ab2, the dead zones in which the trigger claws 59A and 59B do not act on the cereals in the wide trigger areas Aa2 and Ab2. Can be prevented from being formed. As a result, while causing each of the raising regions Aa2 and Ab2 of the left and right pulling devices 22A and 22B to be wide enough to allow passage of the two rows of wheat straw, the right and left pulling devices 22A and 22B are surely caused to cause Can be done.

  By the way, regardless of the 3 and 4 cuttings, the left pulling device 22A, to which 2 threads are always fed, causes the left and right width Wa of the area Aa2 to cause a maximum of 2 threads. It may be configured to have a corresponding width, and the pulling claw 59A has a long length corresponding to the wide cause area Aa2.

  By the way, the left and right scraping and transporting devices 24A and 24B have a scraping and transporting mechanism 71A and 71B provided with rubber scratching belts 74A and 74B as a rotating body that scrapes and transports the upper part of the cereal stock side. By adopting, when acting on the culm before cutting, the protrusions 74a, 74b of the scraping belts 74A, 74B are deformed by losing the strength of the culm before cutting, so that the grain Until the cocoon is cut off, the cedar is scraped and conveyed toward the cereal passage portion 27.

  In such a case, the left and right scraping and conveying devices 24A and 24B are provided with the cover 77A and 77B for preventing the winding of the culm, and the tips of the movable blade 68 and the fixed blade 69 that are the cutting blades of the reaping device 23. If the cover is configured to be located on the front side of the vehicle body, the cover touches the culm before cutting and pushes the culm toward the traveling direction of the vehicle body as the vehicle travels. Bend.

  Then, when the cereal of the crop C thus bent and bent reaches the cutting position of the cutting device 23 and is cut, the cutting and the cutting are performed in the straight direction from the state pushed and bent toward the traveling direction of the vehicle body. Due to the restoring action to return, the vehicle may jump out in the traveling direction of the vehicle body away from the left and right scraping and conveying devices 24A and 24B, and deviate from the conveying area of the left and right scraping and conveying devices 24A and 24B.

  Even if such a phenomenon occurs during a normal mowing operation, the cereals that have deviated from the conveyance area of the left and right scraping and conveying devices 24A and 24B are transported by the left and right scraping and conveying apparatuses 24A and 24B as the vehicle travels. Since the subsequent cereals introduced one after another are pushed back into the conveyance area of the left and right rake conveying devices 24A and 24B, the left and right rake conveying devices 24A and 24B cause the 27 can be scraped and conveyed.

  However, the above-mentioned phenomenon occurs immediately before the turning turning to interrupt the cutting and conveying by the cutting and conveying unit 3 or at the time of the cutting operation at the corner of the farm field where the amount of the cutting and conveying of the cereal by the cutting and conveying unit 3 is small. As a result, the cereals that have been removed from the conveyance areas of the left and right scraping conveyance devices 24A and 24B cannot be pushed back into the conveyance area, and as a result, a large number of cereals that fall out from the conveyance area are generated.

  Therefore, as shown in FIGS. 5 to 7, in this combine, when the left and right scratch conveying devices 24 </ b> A and 24 </ b> B are viewed from the vertical direction with respect to their planes, The cutting of the movable blade 68 and the fixed blade 69 in the longitudinal direction of the vehicle body is preferably performed so that 77A and 77B are located on the rear side of the vehicle body with respect to the distal ends of the movable blade 68 and the fixed blade 69 which are the cutting blades of the cutting device 23. It is configured to be located on the rear side of the vehicle body relative to the middle part of the operating range.

  As a result, even if the protrusions 74a and 74b of the scraping belts 74A and 74B are deformed by losing the strength of the cereal before cutting, the covers 77A and 77B are not cut before the vehicle travels. It is possible to prevent the rice cake from being pushed and bent toward the traveling direction of the vehicle body. As a result, it is possible to prevent the pushed and bent cereals from spilling out of the transfer area of the left and right scraping transfer devices 24A and 24B together with the cutting.

  As shown in FIGS. 7 and 13, the left and right scavenging and transporting devices 24A and 24B have their scrambling and transporting mechanisms 71A and 71A when viewed from the direction perpendicular to their planes. The trajectories K1a and K1b drawn by the leading ends of the protrusions 74a and 74b of the scavenging belts 74A and 74B in the scooping and transporting area 71B are configured to substantially coincide with the leading ends of the movable blade 68 and the fixed blade 69 in the vehicle longitudinal direction. It is.

  Thereby, it can suppress that protrusion part 74a, 74b of each rake belt 74A, 74B acts on the grain straw before cutting, and can suppress the fall of durability by the deformation | transformation. . Moreover, by suppressing the deformation of the projecting portions 74a, 74b, the culm immediately after cutting can be quickly squeezed and conveyed toward the culm passing portion 27 by the left and right rake belts 74A, 74B. It is possible to improve the efficiency of scraping and transporting the culm by the left and right scraping and transporting devices 24A and 24B, and to prevent a decrease in the grain recovery rate due to the disorder of the transporting posture of the culm due to the transport delay. .

  As shown in FIGS. 7 and 13, the left and right scavenging and conveying devices 24A and 24B guide the guide members 73A and 73B when the scrambling and conveying devices 24A and 24B are viewed from the direction perpendicular to their planes. Preferably, the action portions 73a and 73b are located on the rear side of the vehicle body with respect to the distal ends of the movable blade 68 and the fixed blade 69, preferably more than the middle portion of the cutting action range of the movable blade 68 and the fixed blade 69 in the longitudinal direction of the vehicle body. It is configured to be located on the rear side of the vehicle body.

  Accordingly, it is possible to prevent the guide members 73A and 73B from coming into contact with the culm before cutting and pushing the culm toward the traveling direction of the vehicle body as the vehicle travels. it can. As a result, it is possible to prevent the pushed and bent cereals from spilling out of the transfer area of the left and right scraping transfer devices 24A and 24B together with the cutting.

  As shown in FIGS. 7 and 13, the left and right scavenging and conveying devices 24A and 24B are projected from the left and right packers 72A and 72B when viewed from the direction perpendicular to their planes. The front ends of the trajectories K2a and K2b drawn by the tips of the portions 72a and 72b are configured to substantially coincide with the tips of the movable blade 68 and the fixed blade 69 in the longitudinal direction of the vehicle body.

  As a result, the cereal immediately after cutting can be quickly scraped and conveyed by the left and right packers 72A and 72B toward the cereal passing part 27. As a result, the stalks are scraped by the left and right scraping and conveying devices 24A and 24B. In addition to being able to improve the transport efficiency, it is possible to prevent the grain recovery rate from being lowered due to the disordered transport posture of the culm due to the transport delay.

  By the way, when the left and right scraping and conveying devices 24A and 24B are viewed from the direction perpendicular to their planes, the scraping and conveying devices 71A and 71B are in the scraping and conveying region of the respective scraping and conveying mechanisms 71A and 71B. You may comprise so that the front end of locus | trajectory K2a and K2b which the front-end | tip of protrusion part 72a, 72b of left and right packers 72A and 72B draws may correspond with the front-end | tip of the movable blade 68 and the fixed blade 69 in a vehicle body front-back direction.

  As shown in FIGS. 4, 5, and 7 to 9, the cutting blade driving device 70 is provided at the left end portion of the intermediate member 36 so as to be positioned on the laterally outer side of the vehicle body with respect to the left transmission shaft 47. is there.

  Thereby, it can prevent reliably that the stockholder side of the grain cocoon cut by the reaping device 23 contacts the cutting blade driving device 70, and as a result, the conveyance posture of the corn straw is disturbed by the contact. The grain recovery rate is reduced such that the supply side of the cereals is transported toward the threshing device 4 by the feeding / conveying device 25, and the handling of the threshing process in the threshing device 4 is likely to occur. Can be avoided in advance.

  Further, since the cutting blade driving device 70 is located at the left end portion of the cutting conveyance unit 3 that is opened without the boarding operation unit 2 being adjacent to the cutting driving unit 2, the cutting blade driving device 70 can be easily assembled and maintained.

    [Another embodiment]

[1] The harvesting and harvesting machine may be a binder.

[2] The cutting and conveying unit 3 is provided with one frame of the pulling frame 26A, and includes one frame and two lines of trimming specifications in which the pulling frame 26A is formed for two lines, and three frames of the pulling frames 26A to 26C and each pulling frame. 3 frames 6 strips specifications with 26A-26C formed for 2 strips, 4 frames 8 crops specification with 2 pulling frames 26A-26D with 4 frames pulling frames 26A-26D 2 pulling frames 26A and 26B, one pulling frame 26A (26B) is formed for two strips, and the other pulling frame 26B (26A) is formed for one strip, two frames and three strips, Three-frame five-cutting specification including three pull-up frames 26A to 26C, left and right pull-up frames 26A, 26B formed for two lines, and central pull-up frame 26C formed for one line, 4 It is provided with frame raising frames 26A-26D, and left and right 4 frame 7 line cutting specifications in which 3 frames of each of the pulling frames 26A, 26B and the central right pulling frame 26D are formed for two lines, and the central left pulling frame 26C is formed for one line, or 4 4-frame 6-cutting specification with frame pulling frames 26A-26D, left and right pulling frames 26A, 26B formed for two lines, and central pulling frames 26C, 26D formed for one line , Etc. may be configured.

Overall side view of self-removing combine Overall plan view of self-removing combine Front view of self-removing combine The figure which shows the transmission composition etc. of the cutting and conveying part Left side view showing the configuration of the front part of the cutting and conveying unit Right side view showing the configuration of the front part of the cutting and conveying unit Cross-sectional plan view of the main part viewed from the direction perpendicular to the plane of the pick-up conveyor Longitudinal front view of the main part showing the configuration of the take-up transport device, etc. Longitudinal rear view of the main part showing the transmission configuration of the cutting and conveying unit Longitudinal right side view of the main part showing the transmission configuration for the right pulling device Left side view and plan view of main part showing another embodiment of weeding member in which divider is constituted by rubber hose Longitudinal front view showing the configuration of the pulling device Cross-sectional plan view of the main part showing the positional relationship between the scraping and transporting device and the reaping device when viewed from the direction perpendicular to the plane of the scraping and transporting device 4 is a schematic plan view of the main part showing the working state of four-cutting Schematic plan view of the main part showing the working state of 3-cutting

3 Cutting and conveying part 21A Weeding member (the most opposite boarding operation part side)
21B Weeding member (most boarding operation side)
21C Weeding material (right and left middle)
22A Pulling device (the farthest boarding operation side)
22B Pulling device (most boarding operation side)
23 reaping device 24A scraping and transporting device (most anti-boarding operation side)
24B Scratch transfer device (most boarding operation side)
26A Pull-up frame (the farthest boarding operation side)
26B Pull-up frame (most boarding operation side)
27 Grain passage
51A divider
51B divider
66A support member
66B support member 68 Cutting blade 69 Cutting blade 71A Rotating body (the farthest riding operation part side)
71B Rotating body (most boarding operation part side)
72A Rotating body (the farthest boarding operation part side)
72B Rotating body (most boarding operation part side)
72a Protruding part (rotating body)
72b Protruding part (rotating body)
73A Guide member (on the farthest boarding operation side)
73B Guide member (most boarding operation side)
74a Projection (rotating body)
74b Projection (rotating body)
76A pulley (the side away from the grain passer)
76B pulley (the side away from the grain passer)
77A Cover (the farthest boarding operation side)
77B Cover (most boarding operation side)
79A auxiliary member
79B Auxiliary member C Crop K2a Trajectory (Rotating body)
K2b locus (rotating body)

Claims (9)

A plurality of weeding members that divide crop cereals into different cropping rows are arranged at predetermined intervals in the left-right direction, and between two adjacent weeding members, crop grains introduced between them By equipping a pulling device that causes wrinkles, a predetermined number of pulling frames are formed in the cutting and conveying section,
The pulling frame is provided with a scraping and transporting device that scrapes and transports the cereal caused by the pulling device to a predetermined culm passing portion,
A cutting and harvesting structure of a harvesting and harvesting machine provided with a harvesting device that harvests cereal grains caused by the pulling device in the harvesting and conveying unit,
The scraping and transporting device is equipped with a rotating body having a plurality of protrusions for scraping and transporting, and a cover that covers the rotating center side of the rotating body,
The scraping / conveying device so that the cover is positioned on the rear side of the vehicle body with respect to the tip of the cutting blade of the reaping device when the scraping / conveying device is viewed from a direction perpendicular to the plane of the scraping / conveying device. configure the,
The reaping device is configured in a straight line shape in the left-right direction along the left-right direction of the vehicle body so as to span the weeding members located at both the left and right ends of the reaping conveyance unit,
Of the pair of left and right pulleys provided in the rotating body, the pulling pulley whose side is away from the grain passing portion is located at the side away from the grain passing portion in the frame of the pulling frame. It is configured to be located laterally outside the left and right side ends of the device,
When the scraping / conveying device is viewed from a direction perpendicular to the plane of the scraping / conveying device, the entire scraping / conveying region located on the front side of the vehicle body relative to the pair of pulleys in the rotating body is true of the reaping device. The harvesting and transporting structure of the harvesting and harvesting machine configured to be positioned above . An auxiliary member that supports left and right one end sides away from the culm passing part of the scraping conveying device;
The harvesting and transporting structure of a harvesting and harvesting machine according to claim 1, wherein the auxiliary member is configured to extend from the left and right end sides of the scraping transporting device toward the front side of the vehicle body . The harvesting and transporting structure of a harvesting and harvesting machine according to claim 2 , wherein the auxiliary member is arranged on the upper side of the cover in the scraping and transporting apparatus . The harvesting and transporting structure of a harvesting and harvesting machine according to claim 2 or 3, wherein the auxiliary member is disposed at a position laterally outer than the left and right side ends of the pulling device in the frame of the pulling frame. 5. The auxiliary member according to claim 2, wherein the auxiliary member is disposed at a position overlapping with a divider provided in a weeding member disposed on the left and right end sides of the scraping conveyance device when viewed in the front-rear direction of the vehicle body. The harvesting and transporting structure of the harvesting and harvesting machine. The cutting and transporting structure of the harvesting and harvesting machine according to any one of claims 2 to 5, wherein the front end of the auxiliary member is supported by a weeding member disposed on the left and right end sides of the scraping and transporting device. . A supporting member that supports the pulling device on a weeding member disposed on the left and right end sides of the scraping conveying device;
The harvesting and transporting structure for a harvesting and harvesting machine according to any one of claims 2 to 6, wherein a front end of the auxiliary member is supported by the support member. Equipped with a rotating body with a plurality of protrusions for scraping transport to the scraping transport device,
The front end of the locus drawn by the tip of the projecting portion of the rotating body coincides with or substantially coincides with the tip of the cutting blade in the longitudinal direction of the vehicle body when the scraper transport device is viewed from a direction perpendicular to the plane of the scraper transport device. The reaping and conveying structure for the harvesting and harvesting machine according to any one of claims 1 to 7, wherein the rake conveying device is configured as described above. Formed in the state where the two pulling frames are arranged side by side in the cutting and conveying unit,
In each of the pulling frames, the left and right intervals between two adjacent weeding members are set so that up to two crops can be introduced between them, and located between those weeding members. the inking unit, and configured to be causes of culms up two rows, each of the causes frame, by configured for two rows causing culms up Article 2, the reaper transport unit The harvesting and transporting structure of the harvesting and harvesting machine according to any one of claims 1 to 8 , wherein the harvesting and harvesting machine is configured to have a two-frame four-strip cutting specification in which a maximum of four crops are trimmed by the two right and left pulling frames .

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